Cummins fault codes · J1939 SPN/FMI

Cummins fault code lookup. 962 codes.

Look up any Cummins fault code or J1939 SPN and FMI. Plain-English meaning, what the dash lamp means, common causes, and green, yellow and red examples so you know whether to keep driving.

Cummins fault code (like 1922), J1939 SPN and FMI (like SPN 3251 FMI 0), or an OBD-II code (like P0420).

3714 Engine Protection Torque Derate 1922 DPF Differential Pressure 3712 SCR Operator Inducement 3582 SCR Catalyst Conversion Efficiency 559 Injector Metering Rail 1 Pressure 3727 High Pressure Common Rail Fuel Pressure Relief Valve 1691 DOC Conversion Efficiency 3375 DPF Regeneration too Frequent 2771 Outlet NOx Sensor 3868 DEF Quality 4572 DEF Tank Temperature 1712 DEF Tank Heater 2963 Engine Coolant Temperature 1117 Power Supply Lost With Ignition On 3361 Intake Manifold 1 Pressure

Browse by system

Every code, grouped by what it affects

Lamp colors: red stop, amber warning, no lamp. Codes come from Cummins' published fault code tables.

DPF (diesel particulate filter) 53 codes

Code	SPN	FMI	Meaning
1879	3251	3	DPF Differential Pressure Sensor Circuit: circuit voltage high / shorted high
1881	3251	4	DPF Differential Pressure Sensor Circuit: circuit voltage low / shorted low
1883	3251	2	DPF Differential Pressure Sensor: erratic or intermittent signal
1921	3251	16	DPF Differential Pressure: reading above normal (moderately severe)
1922	3251	0	DPF Differential Pressure: reading above normal (most severe)
1981	3936	15	DPF System: reading above normal (least severe)
1993	4795	31	DPF Missing: condition exists
2639	3251	15	DPF Differential Pressure: reading above normal (least severe)
2742	3249	17	Exhaust Gas Temperature 2: reading below normal (least severe)
2743	3249	18	Exhaust Gas Temperature 2: reading below normal (moderately severe)
2754	81	16	Engine DPF Intake Pressure: reading above normal (moderately severe)
2777	3703	31	Particulate Trap Active Regeneration Inhibited Due to Inhibit Switch: condition exists
3133	3610	3	DPF Outlet Pressure Sensor Circuit: circuit voltage high / shorted high
3134	3610	4	DPF Outlet Pressure Sensor Circuit: circuit voltage low / shorted low
3135	3610	2	DPF Outlet Pressure: erratic or intermittent signal
3245	3936	7	DPF System: not responding / out of adjustment
3253	3242	16	DPF Intake Temperature: reading above normal (moderately severe)
3254	3242	15	DPF Intake Temperature: reading above normal (least severe)
3255	3246	16	DPF Outlet Temperature: reading above normal (moderately severe)
3256	3246	15	DPF Outlet Temperature: reading above normal (least severe)
3311	3242	0	DPF Intake Temperature: reading above normal (most severe)
3312	3246	0	DPF Outlet Temperature: reading above normal (most severe)
3316	3242	4	DPF Intake Temperature Sensor Circuit: circuit voltage low / shorted low
3317	3242	3	DPF Intake Temperature Sensor Circuit: circuit voltage high / shorted high
3318	3242	2	DPF Intake Temperature: erratic or intermittent signal
3319	3246	3	DPF Outlet Temperature Sensor Circuit: circuit voltage high / shorted high
3321	3246	4	DPF Outlet Temperature Sensor Circuit: circuit voltage low / shorted low
3322	3246	2	DPF Outlet Temperature: erratic or intermittent signal
3375	5397	31	DPF Regeneration too Frequent: condition exists
3376	5319	31	DPF Incomplete Regeneration: condition exists
3396	3750	31	DPF 1 Conditions Not Met for Active Regeneration: condition exists
3753	3713	31	DPF Active Regeneration Inhibited Due to System Timeout: condition exists
4143	5741	3	Outlet Soot Sensor: circuit voltage high / shorted high
4144	5741	4	Outlet Soot Sensor: circuit voltage low / shorted low
4151	5742	9	DPF Temperature Sensor Module: abnormal update rate
4153	5747	3	Outlet Soot Sensor Heater: circuit voltage high / shorted high
4154	5747	4	Outlet Soot Sensor Heater: circuit voltage low / shorted low
4158	5742	12	DPF Temperature Sensor Module: bad device or component
4161	5742	3	DPF Temperature Sensor Module: circuit voltage high / shorted high
4162	5742	4	DPF Temperature Sensor Module: circuit voltage low / shorted low
4163	5742	16	DPF Temperature Sensor Module- Data Valid But Above Normal Operating Range: reading above normal (moderately severe)
4213	3695	2	Regeneration Inhibit Switch: erratic or intermittent signal
4259	5742	11	DPF Temperature Sensor Module: root cause not known
4449	5747	10	Outlet Soot Sensor Heater: abnormal rate of change
4451	5741	2	Outlet Soot: erratic or intermittent signal
4584	3936	14	DPF System: special instructions
5938	3750	14	DPF 1 Conditions Not Met for Active Regeneration: special instructions
6265	3936	7	DPF System: not responding / out of adjustment
6551	3610	3	DPF Outlet Pressure Sensor Circuit: circuit voltage high / shorted high
6552	3610	4	DPF Outlet Pressure Sensor Circuit: circuit voltage low / shorted low
6553	3610	2	DPF Outlet Pressure: erratic or intermittent signal
6568	3695	2	Regeneration Inhibit Switch: erratic or intermittent signal
6596	3713	31	DPF Active Regeneration Inhibited Due to System Timeout: condition exists

DEF (diesel exhaust fluid) system 117 codes

Code	SPN	FMI	Meaning
1668	1761	4	DEF Tank Level Sensor Circuit: circuit voltage low / shorted low
1669	1761	3	DEF Tank Level Sensor Circuit: circuit voltage high / shorted high
1673	1761	1	DEF Tank Level: reading below normal (most severe)
1677	3031	4	DEF Tank Temperature Sensor: circuit voltage low / shorted low
1678	3031	3	DEF Tank Temperature Sensor: circuit voltage high / shorted high
1679	3031	2	DEF Tank Temperature: erratic or intermittent signal
1682	3362	31	DEF Dosing Unit Input Lines: condition exists
1683	3363	3	DEF Tank Heater: circuit voltage high / shorted high
1684	3363	4	DEF Tank Heater: circuit voltage low / shorted low
1685	3364	4	DEF Quality Sensor Circuit: circuit voltage low / shorted low
1686	3364	3	DEF Quality Sensor Circuit: circuit voltage high / shorted high
1699	1761	2	DEF Tank Level Sensor: erratic or intermittent signal
1712	3363	18	DEF Tank Heater: reading below normal (moderately severe)
1713	3363	16	DEF Tank Heater: reading above normal (moderately severe)
1714	3364	13	DEF Quality: out of calibration
1715	3364	11	DEF Quality: root cause not known
2976	3361	2	DEF Dosing Unit Temperature: erratic or intermittent signal
3237	4340	3	DEF Line Heater 1 Circuit: circuit voltage high / shorted high
3238	4340	4	DEF Line Heater 1 Circuit: circuit voltage low / shorted low
3239	4342	3	DEF Line Heater 2 Circuit: circuit voltage high / shorted high
3241	4342	4	DEF Line Heater 2 Circuit: circuit voltage low / shorted low
3242	3363	7	DEF Tank Heater: not responding / out of adjustment
3258	4340	5	DEF Line Heater 1 Circuit: circuit open / current low
3261	4342	5	DEF Line Heater 2 Circuit: circuit open / current low
3422	4344	3	DEF Line Heater 3 Circuit: circuit voltage high / shorted high
3423	4344	4	DEF Line Heater 3 Circuit: circuit voltage low / shorted low
3425	4344	5	DEF Line Heater 3 Circuit: circuit open / current low
3497	1761	17	DEF Tank Level: reading below normal (least severe)
3498	1761	18	DEF Tank Level: reading below normal (moderately severe)
3558	3361	3	DEF Dosing Unit: circuit voltage high / shorted high
3559	3361	4	DEF Dosing Unit: circuit voltage low / shorted low
3562	5491	3	DEF Line Heater Relay: circuit voltage high / shorted high
3563	5491	4	DEF Line Heater Relay: circuit voltage low / shorted low
3567	5394	5	DEF Dosing Valve: circuit open / current low
3568	5394	7	DEF Dosing Valve: not responding / out of adjustment
3571	4334	3	DEF Pressure Sensor: circuit voltage high / shorted high
3572	4334	4	DEF Pressure Sensor: circuit voltage low / shorted low
3574	4334	18	DEF Pressure Sensor: reading below normal (moderately severe)
3575	4334	16	DEF Pressure Sensor: reading above normal (moderately severe)
3577	4376	3	DEF Return Valve: circuit voltage high / shorted high
3578	4376	4	DEF Return Valve: circuit voltage low / shorted low
3596	4334	2	DEF Pressure Sensor: erratic or intermittent signal
3713	5491	7	DEF Line Heater Relay: not responding / out of adjustment
3755	5394	2	DEF Dosing Valve: erratic or intermittent signal
3866	3364	1	DEF Quality: reading below normal (most severe)
3867	3364	18	DEF Quality: reading below normal (moderately severe)
3868	3364	9	DEF Quality: abnormal update rate
3876	3364	7	DEF Quality Sensor: not responding / out of adjustment
3877	3364	12	DEF Quality Sensor: bad device or component
3878	3364	2	DEF Quality: erratic or intermittent signal
4155	5746	3	DEF Dosing Unit Heater Relay: circuit voltage high / shorted high
4156	5746	4	DEF Dosing Unit Heater Relay: circuit voltage low / shorted low
4157	4376	7	DEF Return Valve: not responding / out of adjustment
4168	5745	3	DEF Dosing Unit Heater: circuit voltage high / shorted high
4169	5745	4	DEF Dosing Unit Heater: circuit voltage low / shorted low
4171	5745	18	DEF Dosing Unit Heater: reading below normal (moderately severe)
4174	4337	3	DEF Dosing Temperature Sensor: circuit voltage high / shorted high
4175	4337	4	DEF Dosing Temperature Sensor: circuit voltage low / shorted low
4233	3515	3	DEF Temperature 2 Sensor Circuit: circuit voltage high / shorted high
4234	3515	4	DEF Temperature 2 Sensor Circuit: circuit voltage low / shorted low
4235	3521	31	DEF Property: condition exists
4242	3515	2	DEF Temperature 2: erratic or intermittent signal
4243	3515	10	DEF Temperature 2 Abnormal Rate of Change: abnormal rate of change
4244	4337	2	DEF Dosing Temperature: erratic or intermittent signal
4245	5798	2	DEF Dosing Unit Heater Temperature: erratic or intermittent signal
4249	4337	10	DEF Dosing Temperature: abnormal rate of change
4251	5798	10	DEF Dosing Unit Heater Temperature: abnormal rate of change
4277	3364	10	DEF Quality: abnormal rate of change
4486	5839	31	DEF Consumption Malfunction: condition exists
4487	5840	31	DEF Dosing Malfunction: condition exists
4488	5841	31	DEF Quality Malfunction: condition exists
4572	3031	9	DEF Tank Temperature: abnormal update rate
4573	3826	18	DEF Average Consumption: reading below normal (moderately severe)
4677	1761	9	SAE J1939 Multiplexing PGN Timeout Error: abnormal update rate
4679	1761	5	DEF Tank Level Sensor Circuit: circuit open / current low
4682	3031	5	DEF Tank Temperature Sensor Circuit: circuit open / current low
4731	3031	13	DEF Tank Temperature Sensor: out of calibration
4732	1761	13	DEF Tank Level Sensor: out of calibration
4736	3031	6	DEF Tank Temperature Sensor Circuit: circuit grounded / current high
4737	3031	11	DEF Tank Temperature: root cause not known
4738	1761	6	DEF Tank Level Sensor Circuit: circuit grounded / current high
4739	1761	11	DEF Tank Level Sensor: root cause not known
4743	3515	5	DEF Temperature 2 Sensor Circuit: circuit open / current low
4744	3515	6	DEF Temperature 2 Sensor Circuit: circuit grounded / current high
4745	3515	11	DEF Temperature 2: root cause not known
4752	520716	3	DEF Dosing Valve 1 Heater: circuit voltage high / shorted high
4753	520716	4	DEF Dosing Valve 1 Heater: circuit voltage low / shorted low
4768	3521	11	DEF Property: root cause not known
4769	1761	10	DEF Tank Level Sensor: abnormal rate of change
4842	3364	15	DEF Quality: reading above normal (least severe)
5278	6802	31	DEF Dosing System Frozen: condition exists
5866	520953	3	DEF Dosing Unit Relay Feedback- Voltage Above Normal or Shorted to High Source.: circuit voltage high / shorted high
5867	520953	4	DEF Dosing Unit Relay Feedback- Voltage Below Normal or Shorted to Low Source.: circuit voltage low / shorted low
6475	3363	7	DEF Tank Heater: not responding / out of adjustment
6476	3363	18	DEF Tank Heater: reading below normal (moderately severe)
6477	5491	3	DEF Line Heater Relay: circuit voltage high / shorted high
6478	5491	4	DEF Line Heater Relay: circuit voltage low / shorted low
6479	3363	3	DEF Tank Heater: circuit voltage high / shorted high
6481	3363	4	DEF Tank Heater: circuit voltage low / shorted low
6482	4340	5	DEF Line Heater 1 Circuit: circuit open / current low
6483	4342	5	DEF Line Heater 2 Circuit: circuit open / current low
6484	4344	5	DEF Line Heater 3 Circuit: circuit open / current low
6513	5745	17	DEF Dosing Unit Heater: reading below normal (least severe)
6526	1761	13	DEF Tank Level Sensor: out of calibration
6527	4376	7	DEF Return Valve: not responding / out of adjustment
6529	5746	3	DEF Dosing Unit Heater Relay: circuit voltage high / shorted high
6531	4340	3	DEF Line Heater 1 Circuit: circuit voltage high / shorted high
6532	4340	4	DEF Line Heater 1 Circuit: circuit voltage low / shorted low
6533	4342	3	DEF Line Heater 2 Circuit: circuit voltage high / shorted high
6534	4342	4	DEF Line Heater 2 Circuit: circuit voltage low / shorted low
6535	4344	3	DEF Line Heater 3 Circuit: circuit voltage high / shorted high
6536	4344	4	DEF Line Heater 3 Circuit: circuit voltage low / shorted low
6537	5491	7	DEF Line Heater Relay: not responding / out of adjustment
6559	3031	4	DEF Tank Temperature Sensor: circuit voltage low / shorted low
6562	1761	11	DEF Tank Level Sensor: root cause not known
6619	3515	10	DEF Temperature 2: abnormal rate of change
6752	3364	18	DEF Quality: reading below normal (moderately severe)

SCR catalyst and inducement 36 codes

Code	SPN	FMI	Meaning
3142	4360	3	SCR Intake Temperature Sensor Circuit: circuit voltage high / shorted high
3143	4360	4	SCR Intake Temperature Sensor Circuit: circuit voltage low / shorted low
3144	4360	2	SCR Intake Temperature Sensor: erratic or intermittent signal
3146	4363	3	SCR Outlet Temperature Sensor Circuit: circuit voltage high / shorted high
3147	4363	4	SCR Outlet Temperature Sensor Circuit: circuit voltage low / shorted low
3148	4363	2	SCR Outlet Temperature Sensor: erratic or intermittent signal
3151	4794	31	SCR Catalyst System Missing: condition exists
3164	4360	15	SCR Intake Temperature: reading above normal (least severe)
3165	4363	0	SCR Outlet Temperature: reading above normal (most severe)
3229	4360	0	SCR Intake Temperature: reading above normal (most severe)
3231	4360	16	SCR Intake Temperature: reading above normal (moderately severe)
3235	4363	16	SCR Outlet Temperature: reading above normal (moderately severe)
3582	4364	18	SCR Catalyst Conversion Efficiency: reading below normal (moderately severe)
3712	5246	0	SCR Operator Inducement: reading above normal (most severe)
3751	4792	7	SCR Catalyst System: not responding / out of adjustment
4152	5743	9	SCR Temperature Sensor Module: abnormal update rate
4159	5743	12	SCR Temperature Sensor Module: bad device or component
4164	5743	3	SCR Temperature Sensor Module: circuit voltage high / shorted high
4165	5743	4	SCR Temperature Sensor Module: circuit voltage low / shorted low
4166	5743	16	SCR Temperature Sensor Module: reading above normal (moderately severe)
4261	5743	11	SCR Temperature Sensor Module: root cause not known
4489	5842	31	SCR Monitoring System Malfunction: condition exists
4585	4792	14	SCR Catalyst System: special instructions
4586	4339	31	SCR Feedback Control Status: condition exists
4658	4331	18	SCR Actual Dosing Reagent Quantity: reading below normal (moderately severe)
4863	5245	31	DEF Tank Low Level Indicator: condition exists
5247	4360	16	SCR Intake Temperature: reading above normal (moderately severe)
5631	6928	31	SCR System Cleaning Inhibited Due to System Timeout: condition exists
5632	6918	31	SCR System Cleaning Inhibited Due to Inhibit Switch: condition exists
5653	6881	9	SCR Operator Inducement Override Switch: abnormal update rate
5654	6881	13	SCR Operator Inducement Override Switch: out of calibration
6517	4364	17	SCR Catalyst Conversion Efficiency: reading below normal (least severe)
6569	4363	3	SCR Outlet Temperature Sensor Circuit: circuit voltage high / shorted high
6571	4363	4	SCR Outlet Temperature Sensor Circuit: circuit voltage low / shorted low
6597	6928	31	SCR System Cleaning Inhibited Due to System Timeout: condition exists
6634	7848	14	SCR System Conditions Not Met for Active Cleaning: special instructions

NOx sensors 33 codes

Code	SPN	FMI	Meaning
1694	3226	2	Outlet NOx Sensor: erratic or intermittent signal
1861	3217	2	Intake Oxygen Sensor: erratic or intermittent signal
1885	3216	4	Intake NOx Sensor Circuit: circuit voltage low / shorted low
1887	3226	4	Outlet NOx Sensor Circuit: circuit voltage low / shorted low
2683	3227	9	Outlet Oxygen Sensor Circuit: abnormal update rate
2771	3226	9	Outlet NOx Sensor: abnormal update rate
3228	3216	2	Intake NOx Sensor: erratic or intermittent signal
3232	3216	9	Intake NOx Sensor: abnormal update rate
3543	4094	31	NOx limits exceeded due to Insufficient Reagent Quality: condition exists
3545	3226	10	Outlet NOx Sensor: abnormal rate of change
3547	4096	31	DEF Tank Empty: condition exists
3583	5031	10	Outlet NOx Sensor Heater: abnormal rate of change
3649	5024	10	Intake NOx Sensor Heater: abnormal rate of change
3681	3228	2	Outlet NOx Sensor Power Supply: erratic or intermittent signal
3682	3218	2	Intake NOx Sensor Power Supply: erratic or intermittent signal
3717	3226	13	Outlet NOx Sensor: out of calibration
3718	3216	13	Intake NOx: out of calibration
3725	3216	10	Intake NOx Sensor: abnormal rate of change
3748	3216	20	Intake NOx Sensor: data drifted high
3749	3226	20	Outlet NOx Sensor: data drifted high
3988	3265	9	2 Outlet NOx: abnormal update rate
4145	3255	9	2 Intake NOx Sensor: abnormal update rate
4452	520668	31	Outlet NOx Sensor Closed Loop Operation: condition exists
6458	3216	20	Intake NOx Sensor: data drifted high
6459	3216	21	Intake NOx Sensor: data drifted low
6462	3226	20	Outlet NOx Sensor: data drifted high
6463	3226	21	Outlet NOx Sensor: data drifted low
6464	3226	2	Outlet NOx Sensor: erratic or intermittent signal
6521	3226	4	Outlet NOx Sensor Circuit- Voltage below normal or shorted to low source: circuit voltage low / shorted low
6565	3226	10	Outlet NOx Sensor: abnormal rate of change
6581	5031	10	Outlet NOx Sensor Heater: abnormal rate of change
6582	3228	2	Outlet NOx Sensor Power Supply: erratic or intermittent signal
6621	3216	10	Intake NOx Sensor: abnormal rate of change

DOC and aftertreatment fuel doser 52 codes

Code	SPN	FMI	Meaning
1664	4796	31	DOC Missing: condition exists
1691	5298	18	DOC Conversion Efficiency: reading below normal (moderately severe)
1932	3556	2	Doser: erratic or intermittent signal
1964	3556	7	Doser: not responding / out of adjustment
1977	3556	5	Doser Circuit: circuit open / current low
2637	5018	11	DOC Face Plugged: root cause not known
2638	5298	17	DOC Conversion Efficiency: reading below normal (least severe)
2732	4097	3	Fuel Drain Valve Circuit: circuit voltage high / shorted high
2733	4097	4	Fuel Drain Valve Circuit: circuit voltage low / shorted low
2778	3481	16	Fuel Rate: reading above normal (moderately severe)
2878	4097	7	Fuel Drain Valve: not responding / out of adjustment
3152	4809	3	Warm Up DOC Intake Temperature Sensor Circuit: circuit voltage high / shorted high
3153	4809	4	Warm Up DOC Intake Temperature Sensor Circuit: circuit voltage low / shorted low
3154	4809	2	Warm Up DOC Intake Temperature: erratic or intermittent signal
3155	4810	3	Warm Up DOC Outlet Temperature Sensor Circuit: circuit voltage high / shorted high
3156	4810	4	Warm Up DOC Outlet Temperature Sensor Circuit: circuit voltage low / shorted low
3157	4810	2	Warm Up DOC Outlet Temperature: erratic or intermittent signal
3158	4793	31	Warm Up DOC Missing: condition exists
3162	4810	0	Warm Up DOC Outlet Temperature: reading above normal (most severe)
3166	4809	13	Warm Up DOC Intake Temperature Sensor Swapped: out of calibration
3167	3556	18	Doser: reading below normal (moderately severe)
3169	4810	16	Warm Up DOC Outlet Temperature: reading above normal (moderately severe)
3223	3490	4	Purge Air Actuator Circuit: circuit voltage low / shorted low
3224	3490	3	Purge Air Actuator Circuit: circuit voltage high / shorted high
3225	3490	7	Purge Air Actuator: not responding / out of adjustment
3247	4809	16	Warm Up DOC Intake Temperature: reading above normal (moderately severe)
3249	4810	15	Warm Up DOC Outlet Temperature: reading above normal (least severe)
3251	4765	16	DOC Intake Temperature: reading above normal (moderately severe)
3313	4765	4	DOC Intake Temperature Sensor Circuit: circuit voltage low / shorted low
3314	4765	3	DOC Intake Temperature Sensor Circuit: circuit voltage high / shorted high
3315	4765	2	DOC Intake Temperature: erratic or intermittent signal
3325	4765	13	DOC Intake Temperature Swapped: out of calibration
4253	5797	12	Warm Up DOC Temperature Sensor Module: bad device or component
4254	5797	3	Warm Up DOC Temperature Sensor Module: circuit voltage high / shorted high
4255	5797	4	Warm Up DOC Temperature Sensor Module: circuit voltage low / shorted low
4256	5797	16	Warm Up DOC Temperature Sensor Module: reading above normal (moderately severe)
4258	5797	11	Warm Up DOC Temperature Sensor Module: root cause not known
4533	4766	3	DOC Outlet Gas Temperature Sensor Circuit: circuit voltage high / shorted high
4534	4766	4	DOC Outlet Gas Temperature Sensor Circuit: circuit voltage low / shorted low
5386	4766	2	DOC Outlet Gas Temperature: erratic or intermittent signal
5387	4766	0	DOC Outlet Gas Temperature: reading above normal (most severe)
5388	4766	16	DOC Outlet Gas Temperature: reading above normal (moderately severe)
5389	4766	15	DOC Outlet Gas Temperature: reading above normal (least severe)
5391	6882	9	DOC Temperature Sensor Module: abnormal update rate
5392	6882	12	DOC Temperature Sensor Module: bad device or component
5393	6882	3	DOC Temperature Sensor Module: circuit voltage high / shorted high
5394	6882	4	DOC Temperature Sensor Module: circuit voltage low / shorted low
5395	6882	11	DOC Temperature Sensor Module: root cause not known
5396	6882	16	DOC Temperature Sensor Module: reading above normal (moderately severe)
5617	524286	31	DOC System- Special Instruction: condition exists
6539	4765	2	DOC Intake Temperature: erratic or intermittent signal
6726	4796	31	DOC Missing: condition exists

EGR (exhaust gas recirculation) 21 codes

Code	SPN	FMI	Meaning
1228	27	2	EGR Valve Position: erratic or intermittent signal
1866	411	2	EGR Differential Pressure: erratic or intermittent signal
1867	412	2	EGR Temperature: erratic or intermittent signal
1893	2791	9	EGR Valve Control Circuit: abnormal update rate
1896	2791	13	EGR Valve Controller: out of calibration
1961	2791	15	EGR Valve Control Circuit Over Temperature: reading above normal (least severe)
2272	27	4	EGR Valve Position Circuit: circuit voltage low / shorted low
2273	411	3	EGR Differential Pressure Sensor Circuit: circuit voltage high / shorted high
2274	411	4	EGR Differential Pressure Sensor Circuit: circuit voltage low / shorted low
2349	2791	5	EGR Valve Control Circuit: circuit open / current low
2353	2791	6	EGR Valve Control Circuit: circuit grounded / current high
2357	2791	7	EGR Valve Control Circuit: not responding / out of adjustment
2375	412	3	EGR Temperature Sensor Circuit: circuit voltage high / shorted high
2376	412	4	EGR Temperature Sensor Circuit: circuit voltage low / shorted low
2961	412	15	EGR Temperature: reading above normal (least severe)
2962	412	16	EGR Temperature: reading above normal (moderately severe)
3136	5019	3	Engine EGR Outlet Pressure Sensor Circuit: circuit voltage high / shorted high
3137	5019	4	Engine EGR Outlet Pressure Sensor Circuit: circuit voltage low / shorted low
3138	5019	2	Engine EGR Outlet Pressure: erratic or intermittent signal
4485	5838	31	EGR Valve Malfunction: condition exists
6555	2791	7	EGR Valve Control Circuit: not responding / out of adjustment

Turbo, VGT and boost 47 codes

Code	SPN	FMI	Meaning
122	102	3	Intake Manifold 1 Pressure Sensor Circuit: circuit voltage high / shorted high
123	102	4	Intake Manifold 1 Pressure Sensor Circuit: circuit voltage low / shorted low
124	102	16	Intake Manifold 1 Pressure: reading above normal (moderately severe)
125	102	18	Intake Manifold 1 Pressure: reading below normal (moderately severe)
433	102	2	Intake Manifold Pressure Sensor Circuit: erratic or intermittent signal
466	1188	4	Turbocharger #1 Wastegate Control Circuit: circuit voltage low / shorted low
595	103	16	Turbocharger 1 Speed: reading above normal (moderately severe)
616	1173	16	High Turbo Compressor Inlet Temp RB: reading above normal (moderately severe)
617	1172	0	High Turbo Compressor Inlet Temp LB: reading above normal (most severe)
629	1176	18	Turbocharger 1 Compressor Intake Pressure: reading below normal (moderately severe)
686	103	2	Turbocharger 1 Speed: erratic or intermittent signal
687	103	18	Turbocharger 1 Speed: reading below normal (moderately severe)
691	1172	3	Turbocharger 1 Compressor Intake Temperature Circuit: circuit voltage high / shorted high
692	1172	4	Turbocharger 1 Compressor Intake Temperature Circuit: circuit voltage low / shorted low
693	1172	2	Turbocharger 1 Compressor Intake Temperature: erratic or intermittent signal
694	1173	3	RBF Turbo Comp Inlet Temp Sens Failed High: circuit voltage high / shorted high
695	1174	4	RBR Turbo Comp Inlet Temp Sens Failed Low: circuit voltage low / shorted low
741	1176	3	Turbocharger 1 Compressor Intake Pressure Circuit: circuit voltage high / shorted high
742	1176	4	Turbocharger 1 Compressor Intake Pressure Circuit: circuit voltage low / shorted low
743	1176	2	Turbocharger 1 Compressor Intake Pressure: erratic or intermittent signal
768	923	11	Output Device Driver (VGT or Transmission shift PWM signal): root cause not known
777	1180	0	Turbocharger #1 Turbine Inlet Temperature High: reading above normal (most severe)
1894	641	9	VGT Actuator Driver Circuit: abnormal update rate
1898	641	13	VGT Actuator Controller: out of calibration
1962	641	15	VGT Actuator Driver Over Temperature (Calculated): reading above normal (least severe)
1976	641	15	VGT Actuator Driver Over Temperature (Calculated): reading above normal (least severe)
2198	641	11	VGT Actuator Driver Circuit: root cause not known
2288	103	15	Turbocharger 1 Speed: reading above normal (least severe)
2346	2789	15	Turbocharger Turbine Intake Temperature: reading above normal (least severe)
2347	2629	15	Turbocharger Compressor Outlet Temperature (Calculated): reading above normal (least severe)
2387	641	7	VGT Actuator Driver Circuit (Motor): not responding / out of adjustment
2449	641	13	VGT Actuator Controller: out of calibration
2451	2789	16	Turbocharger Turbine Intake Temperature: reading above normal (moderately severe)
2634	641	12	VGT Actuator Controller: bad device or component
2635	641	31	VGT Actuator Driver Circuit: condition exists
2636	641	9	VGT Actuator Driver Circuit: abnormal update rate
2973	102	2	Intake Manifold 1 Pressure: erratic or intermittent signal
3348	1176	1	Turbocharger 1 Compressor Intake Pressure: reading below normal (most severe)
3361	102	10	Intake Manifold 1 Pressure: abnormal rate of change
3369	1172	9	Turbocharger 1 Compressor Intake Temperature Sensor: abnormal update rate
3372	1176	9	Turbocharger 1 Compressor Intake Pressure: abnormal update rate
3616	2633	7	Engine VGT Nozzle Position: not responding / out of adjustment
3683	1127	7	Engine Turbocharger 1 Boost Pressure: not responding / out of adjustment
3917	104	18	Engine Turbocharger Lube Oil Pressure: reading below normal (moderately severe)
4956	6713	13	VGT Actuator Software: out of calibration
4957	6713	31	VGT Actuator Software: condition exists
5177	6713	9	VGT Actuator Driver Circuit: abnormal update rate

High-pressure fuel system (common rail) 106 codes

Code	SPN	FMI	Meaning
112	635	7	Engine Timing Actuator is not responding to ECM commands: not responding / out of adjustment
113	635	3	Engine Timing Actuator Circuit: circuit voltage high / shorted high
114	635	4	Engine Timing Actuator Circuit: circuit voltage low / shorted low
116	156	3	Fuel Timing Pressure Sensor Circuit: circuit voltage high / shorted high
117	156	4	Fuel Timing Pressure Sensor Circuit: circuit voltage low / shorted low
118	135	3	Fuel Pump Delivery Pressure Sensor Circuit: circuit voltage high / shorted high
119	135	4	Fuel Pump Delivery Pressure Sensor Circuit: circuit voltage low / shorted low
166	733	3	Rack Position Sensor #1 Circuit: circuit voltage high / shorted high
172	638	6	Rack Actuator Position #1 Circuit: circuit grounded / current high
173	638	7	Rack Actuator: not responding / out of adjustment
254	632	4	Fuel Shutoff Valve Circuit: circuit voltage low / shorted low
255	632	3	Fuel Shutoff Valve Circuit: circuit voltage high / shorted high
259	632	7	Fuel Shutoff Valve: not responding / out of adjustment
268	94	2	Fuel Pressure Sensor Circuit: erratic or intermittent signal
271	1347	4	Engine Fuel Pump Pressurizing Assembly 1 Circuit: circuit voltage low / shorted low
272	1347	3	Engine Fuel Pump Pressurizing Assembly 1 Circuit: circuit voltage high / shorted high
273	1348	4	High Fuel Pressure Solenoid Valve #2 Circuit: circuit voltage low / shorted low
274	1348	3	High Fuel Pressure Solenoid Valve #2 Circuit: circuit voltage high / shorted high
275	1347	7	Fuel Pumping Element #1 (Front): not responding / out of adjustment
276	633	3	Fuel Injection Control Valve Circuit: circuit voltage high / shorted high
277	633	7	Fuel Injection Control Valve: not responding / out of adjustment
278	1075	11	Fuel Priming Pump Control Circuit: root cause not known
279	633	4	Fuel Injection Control Valve Circuit: circuit voltage low / shorted low
281	1347	7	Engine Fuel Pump Pressurizing Assembly 1: not responding / out of adjustment
282	1348	7	High Fuel Pressure Solenoid Valve #2: not responding / out of adjustment
316	931	3	Fuel Supply Pump Actuator Circuit: circuit voltage high / shorted high
318	931	7	Fuel Supply Pump Actuator: not responding / out of adjustment
328	1348	7	Fuel Pumping Element #2 (Rear): not responding / out of adjustment
329	1077	14	Fuel System Leakage error: special instructions
361	1076	3	Fuel Pump Control Module, Fuel Control Valve Circuit: circuit voltage high / shorted high
362	1076	4	Fuel Pump Control Module, Fuel Control Valve Circuit: circuit voltage low / shorted low
363	1076	7	Fuel Pump Control Module, Fuel Control Valve: not responding / out of adjustment
364	1077	9	Fuel Pump Control Module, CAN Communication Error: abnormal update rate
365	1077	4	Fuel Pump Control Module, Supply Voltage Circuit: circuit voltage low / shorted low
366	1077	2	Fuel Pump Control Module, Supply Voltage Circuit: erratic or intermittent signal
367	1078	11	Fuel Pump Control Module, Increment Angle Time Sensor Error: root cause not known
368	1078	8	Fuel Pump Control Module, Timing Error: abnormal frequency or signal
369	1078	2	Fuel Pump Control Module, Engine Synchronization Error: erratic or intermittent signal
372	1077	11	Fuel Pump Control Module, Idle Validation Error: root cause not known
373	1077	3	Fuel Pump Control Module, Fuel Shutoff Error: circuit voltage high / shorted high
374	1077	12	Fuel Pump Control Module, Self-Test Error: bad device or component
375	629	2	Fuel Pump Control Module, Electronic Calibration Code Error: erratic or intermittent signal
376	1077	13	Fuel Pump Control Module, Fueling or Engine Speed Mismatch: out of calibration
377	1077	7	Fuel Pump Control Module, Stuck Relay Error: not responding / out of adjustment
378	633	5	Fueling Actuator #1 Circuit: circuit open / current low
379	633	6	Fueling Actuator #1 Circuit: circuit grounded / current high
391	632	11	Fuel Shutoff Valve Supply Voltage error: root cause not known
394	635	5	Timing Actuator #1 Circuit: circuit open / current low
395	635	6	Timing Actuator #1 Circuit: circuit grounded / current high
396	1244	5	Fueling Actuator #2 Circuit: circuit open / current low
397	1244	6	Fueling Actuator #2 Circuit: circuit grounded / current high
398	1245	5	Timing Actuator #2 Circuit: circuit open / current low
399	1245	6	Timing Actuator #2 Circuit: circuit grounded / current high
423	156	2	Fuel Timing Pressure or Timing Actuator Stuck: erratic or intermittent signal
449	157	0	Injector Metering Rail 1 Pressure: reading above normal (most severe)
451	157	3	Injector Metering Rail 1 Pressure Sensor Circuit: circuit voltage high / shorted high
452	157	4	Injector Metering Rail 1 Pressure Sensor Circuit: circuit voltage low / shorted low
455	633	3	Fuel Control Valve Circuit: circuit voltage high / shorted high
467	635	2	Timing Rail Actuator Circuit: erratic or intermittent signal
468	633	2	Fuel Rail Actuator Circuit: erratic or intermittent signal
482	94	18	Fuel Pressure Low: reading below normal (moderately severe)
483	1349	3	Injector Metering Rail 2 Pressure Sensor Circuit: circuit voltage high / shorted high
484	1349	4	Injector Metering Rail 2 Pressure Sensor Circuit: circuit voltage low / shorted low
485	1349	16	Injector Metering Rail #2 Pressure High: reading above normal (moderately severe)
486	1349	18	Injector Metering Rail #2 Pressure Low: reading below normal (moderately severe)
514	633	7	Fuel Control Valve: not responding / out of adjustment
517	1076	12	Fuel Metering Solenoid: bad device or component
553	157	16	Injector Metering Rail 1 Pressure: reading above normal (moderately severe)
554	157	2	Injector Metering Rail 1 Pressure: erratic or intermittent signal
559	157	18	Injector Metering Rail 1 Pressure: reading below normal (moderately severe)
581	1381	3	Fuel Supply Pump Inlet Pressure Sensor Circuit: circuit voltage high / shorted high
582	1381	4	Fuel Supply Pump Inlet Pressure Sensor Circuit: circuit voltage low / shorted low
583	1381	18	Fuel Supply Pump Inlet Pressure Low: reading below normal (moderately severe)
755	157	7	Injector Metering Rail 1 Pressure: not responding / out of adjustment
758	1349	7	Injector Metering Rail #2 Pressure Malfunction: not responding / out of adjustment
1923	3482	3	Fuel Shutoff Valve Circuit: circuit voltage high / shorted high
1924	3482	4	Fuel Shutoff Valve Circuit: circuit voltage low / shorted low
1925	3482	2	Fuel Shutoff Valve: erratic or intermittent signal
1926	3480	2	Fuel Pressure Sensor: erratic or intermittent signal
1927	3480	3	Fuel Pressure Sensor Circuit: circuit voltage high / shorted high
1928	3480	4	Fuel Pressure Sensor Circuit: circuit voltage low / shorted low
1963	3482	7	Fuel Shutoff Valve: not responding / out of adjustment
2215	94	18	Fuel Pump Delivery Pressure: reading below normal (moderately severe)
2249	157	1	Injector Metering Rail 1 Pressure: reading below normal (most severe)
2261	94	15	Fuel Pump Delivery Pressure: reading above normal (least severe)
2262	94	17	Fuel Pump Delivery Pressure: reading below normal (least severe)
2311	633	31	Electronic Fuel Injection Control Valve Circuit: condition exists
2741	3482	13	Fuel Shutoff Valve Swapped: out of calibration
2881	3480	17	Fuel Pressure Sensor: reading below normal (least severe)
3337	5395	16	Engine Idle Fuel Quantity: reading above normal (moderately severe)
3338	5395	18	Engine Idle Fuel Quantity: reading below normal (moderately severe)
3727	5571	7	High Pressure Common Rail Fuel Pressure Relief Valve: not responding / out of adjustment
3741	5571	0	High Pressure Common Rail Fuel Pressure Relief Valve: reading above normal (most severe)
4262	5571	3	High Pressure Common Rail Fuel Pressure Relief Valve: circuit voltage high / shorted high
4263	5571	4	High Pressure Common Rail Fuel Pressure Relief Valve: circuit voltage low / shorted low
4265	5571	11	High Pressure Common Rail Fuel Pressure Relief Valve: root cause not known
4284	5793	9	Desired Engine Fueling State: abnormal update rate
4568	3482	16	Fuel Shutoff Valve: reading above normal (moderately severe)
4691	5585	18	Engine Injector Metering Rail 1 Cranking Pressure: reading below normal (moderately severe)
4726	1239	16	Engine Fuel Leakage: reading above normal (moderately severe)
4727	157	15	Injector Metering Rail 1 Pressure: reading above normal (least severe)
4841	6653	16	Cold Start Injector Metering Rail 1 Pressure: reading above normal (moderately severe)
4867	5571	31	High Pressure Common Rail Fuel Pressure Relief Valve: condition exists
4936	5380	11	Engine Fuel Valve 1: root cause not known
4937	5380	13	Engine Fuel Valve 1: out of calibration
5585	5571	15	High Pressure Common Rail Fuel Pressure Relief Valve: reading above normal (least severe)

Fuel supply and water in fuel 20 codes

Code	SPN	FMI	Meaning
261	174	16	Engine Fuel Temperature: reading above normal (moderately severe)
263	174	3	Engine Fuel Temperature Sensor 1 Circuit: circuit voltage high / shorted high
264	174	11	Fuel Temperature Sensor Circuit: root cause not known
265	174	4	Engine Fuel Temperature Sensor 1 Circuit: circuit voltage low / shorted low
266	174	0	Engine Fuel Temperature: reading above normal (most severe)
418	97	15	Water in Fuel Indicator: reading above normal (least severe)
428	97	3	Water in Fuel Indicator Sensor Circuit: circuit voltage high / shorted high
429	97	4	Water in Fuel Indicator Sensor Circuit: circuit voltage low / shorted low
535	174	2	Engine Fuel Temperature: erratic or intermittent signal
546	94	3	Fuel Delivery Pressure Sensor Circuit: circuit voltage high / shorted high
547	94	4	Fuel Delivery Pressure Sensor Circuit: circuit voltage low / shorted low
1852	97	16	Water in Fuel Indicator: reading above normal (moderately severe)
2265	1075	3	Electric Lift Pump for Engine Fuel Supply Circuit: circuit voltage high / shorted high
2266	1075	4	Electric Lift Pump for Engine Fuel Supply Circuit: circuit voltage low / shorted low
2372	95	16	Fuel Filter Differential Pressure: reading above normal (moderately severe)
4615	94	0	Engine Fuel Delivery Pressure: reading above normal (most severe)
4688	6301	3	Water in Fuel Indicator 2 Sensor Circuit: circuit voltage high / shorted high
4689	6301	4	Water in Fuel Indicator 2 Sensor Circuit: circuit voltage low / shorted low
6258	1075	3	Electric Lift Pump for Engine Fuel Supply Circuit: circuit voltage high / shorted high
6259	1075	4	Electric Lift Pump for Engine Fuel Supply Circuit: circuit voltage low / shorted low

Injectors and misfire 38 codes

Code	SPN	FMI	Meaning
311	651	6	Injector Solenoid Valve Cylinder #1 Circuit: circuit grounded / current high
312	655	6	Injector Solenoid Valve Cylinder #5 Circuit: circuit grounded / current high
313	653	6	Injector Solenoid Valve Cylinder #3 Circuit: circuit grounded / current high
314	656	6	Injector Solenoid Valve Cylinder #6 Circuit: circuit grounded / current high
315	652	6	Injector Solenoid Valve Cylinder #2 Circuit: circuit grounded / current high
321	654	6	Injector Solenoid Valve Cylinder #4 Circuit: circuit grounded / current high
322	651	5	Injector Solenoid Driver Cylinder 1 Circuit: circuit open / current low
323	655	5	Injector Solenoid Driver Cylinder 5 Circuit: circuit open / current low
324	653	5	Injector Solenoid Driver Cylinder 3 Circuit: circuit open / current low
325	656	5	Injector Solenoid Driver Cylinder 6 Circuit: circuit open / current low
331	652	5	Injector Solenoid Driver Cylinder 2 Circuit: circuit open / current low
332	654	5	Injector Solenoid Driver Cylinder 4 Circuit: circuit open / current low
539	633	11	Injector Control Valve Electronic Filter (Transorb) Error: root cause not known
1139	651	7	Injector Solenoid Driver Cylinder 1: not responding / out of adjustment
1141	652	7	Injector Solenoid Driver Cylinder 2: not responding / out of adjustment
1142	653	7	Injector Solenoid Driver Cylinder 3: not responding / out of adjustment
1143	654	7	Injector Solenoid Driver Cylinder 4: not responding / out of adjustment
1144	655	7	Injector Solenoid Driver Cylinder 5: not responding / out of adjustment
1145	656	7	Injector Solenoid Driver Cylinder 6: not responding / out of adjustment
1548	657	5	Injector Solenoid Driver Cylinder 7 Circuit: circuit open / current low
1549	658	5	Injector Solenoid Driver Cylinder 8 Circuit: circuit open / current low
1551	660	5	Injector Solenoid Driver Cylinder 10 Circuit: circuit open / current low
1552	661	5	Injector Solenoid Driver Cylinder 11 Circuit: circuit open / current low
1553	662	5	Injector Solenoid Driver Cylinder 12 Circuit: circuit open / current low
1554	663	5	Injector Solenoid Driver Cylinder 13 Circuit: circuit open / current low
1555	664	5	Injector Solenoid Driver Cylinder 14 Circuit: circuit open / current low
1556	665	5	Injector Solenoid Driver Cylinder 15 Circuit: circuit open / current low
1557	666	5	Injector Solenoid Driver Cylinder 16 Circuit: circuit open / current low
1622	659	5	Injector Solenoid Driver Cylinder 9 Circuit: circuit open / current low
1654	1323	31	Engine Misfire Cylinder 1: condition exists
1655	1324	31	Engine Misfire Cylinder 2: condition exists
1656	1325	31	Engine Misfire Cylinder 3: condition exists
1657	1326	31	Engine Misfire Cylinder 4: condition exists
1658	1327	31	Engine Misfire Cylinder 5: condition exists
1659	1328	31	Engine Misfire Cylinder 6: condition exists
1718	1322	31	Engine Misfire for Multiple Cylinders: condition exists
2765	2797	13	Engine Injector Bank 1 Barcodes: out of calibration
4713	5357	31	Engine Fuel Injection Quantity Error for Multiple Cylinders: condition exists

Engine cooling 26 codes

Code	SPN	FMI	Meaning
144	110	3	Engine Coolant Temperature 1 Sensor Circuit: circuit voltage high / shorted high
145	110	4	Engine Coolant Temperature 1 Sensor Circuit: circuit voltage low / shorted low
146	110	16	Engine Coolant Temperature: reading above normal (moderately severe)
151	110	0	Engine Coolant Temperature: reading above normal (most severe)
195	111	3	Coolant Level Sensor 1 Circuit: circuit voltage high / shorted high
196	111	4	Coolant Level Sensor 1 Circuit: circuit voltage low / shorted low
197	111	18	Coolant Level: reading below normal (moderately severe)
231	109	3	Coolant Pressure Sensor Circuit: circuit voltage high / shorted high
232	109	4	Coolant Pressure Sensor Circuit: circuit voltage low / shorted low
233	109	18	Coolant Pressure: reading below normal (moderately severe)
235	111	1	Coolant Level: reading below normal (most severe)
334	110	2	Engine Coolant Temperature: erratic or intermittent signal
422	111	2	Coolant Level: erratic or intermittent signal
611	1383	31	Engine Shut Down Hot: condition exists
1847	110	14	Engine Coolant Temperature: special instructions
2448	111	17	Coolant Level: reading below normal (least severe)
2646	110	31	Engine Coolant Temperature: condition exists
2659	110	31	Engine Coolant Temperature: condition exists
2789	110	18	Engine Coolant Temperature: reading below normal (moderately severe)
2963	110	15	Engine Coolant Temperature: reading above normal (least severe)
3243	3060	18	Engine Cooling System Monitor: reading below normal (moderately severe)
3366	111	18	Coolant Level: reading below normal (moderately severe)
3613	111	9	Coolant Level Sensor: abnormal update rate
5167	111	17	Coolant Level: reading below normal (least severe)
6522	111	3	Coolant Level Sensor 1 Circuit: circuit voltage high / shorted high
6523	111	4	Coolant Level Sensor 1 Circuit: circuit voltage low / shorted low

Cooling fan 20 codes

Code	SPN	FMI	Meaning
245	647	4	Fan Control Circuit: circuit voltage low / shorted low
389	647	11	Fan Clutch Circuit Error: root cause not known
2377	647	3	Fan Control Circuit: circuit voltage high / shorted high
3633	5484	3	Engine Fan Clutch 2 Control Circuit: circuit voltage high / shorted high
3634	5484	4	Engine Fan Clutch 2 Control Circuit: circuit voltage low / shorted low
4789	1639	0	Fan Speed: reading above normal (most severe)
4791	1639	1	Fan Speed: reading below normal (most severe)
5183	6799	3	Fan Blade Pitch Position Sensor Circuit: circuit voltage high / shorted high
5184	6799	4	Fan Blade Pitch Position Sensor Circuit: circuit voltage low / shorted low
5185	6799	7	Fan Blade Pitch: not responding / out of adjustment
6263	647	3	Fan Control Circuit: circuit voltage high / shorted high
6264	647	4	Fan Control Circuit: circuit voltage low / shorted low
6456	5484	3	Engine Fan Clutch 2 Control Circuit: circuit voltage high / shorted high
6457	5484	4	Engine Fan Clutch 2 Control Circuit: circuit voltage low / shorted low
6467	1639	15	Fan Speed: reading above normal (least severe)
6468	1639	17	Fan Speed: reading below normal (least severe)
6469	1639	2	Fan Speed: erratic or intermittent signal
6471	6799	3	Fan Blade Pitch Position Sensor Circuit: circuit voltage high / shorted high
6472	6799	4	Fan Blade Pitch Position Sensor Circuit: circuit voltage low / shorted low
6473	6799	2	Fan Blade Pitch: erratic or intermittent signal

Engine oil 28 codes

Code	SPN	FMI	Meaning
135	100	3	Engine Oil Rifle Pressure 1 Sensor Circuit: circuit voltage high / shorted high
136	1208	3	Pre Filter Oil Pressure Sensor Circuit Failed High: circuit voltage high / shorted high
137	1208	4	Pre Filter Oil Pressure Sensor Circuit Failed Low: circuit voltage low / shorted low
141	100	4	Engine Oil Rifle Pressure 1 Sensor Circuit: circuit voltage low / shorted low
143	100	18	Engine Oil Rifle Pressure: reading below normal (moderately severe)
212	175	3	Engine Oil Temperature Sensor 1 Circuit: circuit voltage high / shorted high
213	175	4	Engine Oil Temperature Sensor 1 Circuit: circuit voltage low / shorted low
214	175	0	Engine Oil Temperature: reading above normal (most severe)
219	1380	1	Low Oil Level in the Centinel makeup oil tank: reading below normal (most severe)
223	1265	4	Engine Oil Burn Valve Solenoid Circuit: circuit voltage low / shorted low
225	1266	4	Engine Oil Replacement Valve Solenoid Circuit: circuit voltage low / shorted low
252	98	2	Engine Oil Level #1 Sensor Circuit: erratic or intermittent signal
253	98	1	Engine Oil Level: reading below normal (most severe)
415	100	1	Engine Oil Rifle Pressure: reading below normal (most severe)
421	175	16	Engine Oil Temperature: reading above normal (moderately severe)
425	175	2	Engine Oil Temperature: erratic or intermittent signal
435	100	2	Engine Oil Rifle Pressure: erratic or intermittent signal
471	98	17	Engine Oil Level: reading below normal (least severe)
473	1380	2	Engine Oil Level #2 Low: erratic or intermittent signal
612	99	1	High Lubricating Oil Filter Restriction: reading below normal (most severe)
649	1378	31	Engine Oil Change Interval: condition exists
688	98	0	Engine Oil Level: reading above normal (most severe)
1428	4186	31	Low Oil Pressure (LOP) Shutdown Relay Driver Diagnostic has detected an error: condition exists
1431	4188	31	Pre-Low Oil Pressure Warning Relay Driver Diagnostic has detected an error: condition exists
2154	611	3	Post-Filter Oil Pressure Sensor Circuit- Shorted high: circuit voltage high / shorted high
2155	611	4	Post-Filter Oil Pressure Sensor Circuit- Shorted Low: circuit voltage low / shorted low
6524	175	3	Engine Oil Temperature Sensor 1 Circuit: circuit voltage high / shorted high
6525	175	4	Engine Oil Temperature Sensor 1 Circuit: circuit voltage low / shorted low

Crankcase and ventilation 17 codes

Code	SPN	FMI	Meaning
555	101	16	Crankcase Pressure: reading above normal (moderately severe)
556	101	0	Crankcase Pressure: reading above normal (most severe)
719	1264	3	Crankcase Blowby Pressure Sensor Circuit: circuit voltage high / shorted high
729	1264	4	Crankcase Blowby Pressure Sensor Circuit: circuit voltage low / shorted low
1843	101	3	Crankcase Pressure Circuit: circuit voltage high / shorted high
1844	101	4	Crankcase Pressure Circuit: circuit voltage low / shorted low
1942	101	2	Crankcase Pressure: erratic or intermittent signal
1974	101	15	Crankcase Pressure: reading above normal (least severe)
2699	520320	7	Crankcase Depression Valve: not responding / out of adjustment
3377	5396	31	Engine Crankcase Ventilation Hose Disconnected: condition exists
3733	862	3	Crankcase Breather Filter Heater Circuit: circuit voltage high / shorted high
3734	862	4	Crankcase Breather Filter Heater Circuit: circuit voltage low / shorted low
4286	520595	3	Closed Crankcase Ventilation System Pressure Sensor: circuit voltage high / shorted high
4287	520595	4	Closed Crankcase Ventilation System Pressure Sensor: circuit voltage low / shorted low
4288	520595	2	Closed Crankcase Ventilation System Pressure: erratic or intermittent signal
6336	862	3	Crankcase Breather Filter Heater Circuit: circuit voltage high / shorted high
6337	862	4	Crankcase Breather Filter Heater Circuit: circuit voltage low / shorted low

Intake air and environment sensors 35 codes

Code	SPN	FMI	Meaning
126	1129	16	High Intake Manifold Pressure Right Bank: reading above normal (moderately severe)
127	1129	18	Low Intake Manifold Pressure Right Bank: reading below normal (moderately severe)
128	1129	3	Right Bank Intake Manifold Pressure Sensor Circuit Failed High: circuit voltage high / shorted high
129	1129	4	Right Bank Intake Manifold Pressure Sensor Circuit Failed Low: circuit voltage low / shorted low
153	105	3	Intake Manifold 1 Temperature Sensor Circuit: circuit voltage high / shorted high
154	105	4	Intake Manifold 1 Temperature Sensor Circuit: circuit voltage low / shorted low
155	105	0	Intake Manifold 1 Temperature: reading above normal (most severe)
156	1131	3	Left Bank Rear Intake Manifold Temp Sensor Circuit Failed High: circuit voltage high / shorted high
157	1131	4	Left Bank Rear Intake Manifold Temp Sensor Circuit Failed Low: circuit voltage low / shorted low
158	1131	0	High Intake Manifold Temp: reading above normal (most severe)
159	1132	3	Right Bank Front Intake Manifold Temperature Sensor Circuit Failed High: circuit voltage high / shorted high
161	1132	4	Right Bank Front Intake Manifold Temperature Sensor Circuit Failed Low: circuit voltage low / shorted low
162	1132	0	High Intake Manifold Temperature: reading above normal (most severe)
163	1133	3	Right Bank Rear Intake Manifold Temperature Sensor Circuit Failed High: circuit voltage high / shorted high
164	1133	4	Right Bank Rear Intake Manifold Temperature Sensor Circuit Failed Low: circuit voltage low / shorted low
165	1133	0	High Intake Manifold Temperature: reading above normal (most severe)
221	108	3	Barometric Pressure Sensor Circuit: circuit voltage high / shorted high
222	108	4	Barometric Pressure Sensor Circuit: circuit voltage low / shorted low
249	171	3	Ambient Air Temperature Sensor 1 Circuit: circuit voltage high / shorted high
256	171	4	Ambient Air Temperature Sensor 1 Circuit: circuit voltage low / shorted low
295	108	2	Barometric Pressure: erratic or intermittent signal
419	1319	2	Intake Manifold Boost Pressure Imbalance: erratic or intermittent signal
436	105	2	Intake Manifold 1 Temperature: erratic or intermittent signal
488	105	16	Intake Manifold 1 Temperature: reading above normal (moderately severe)
1943	3555	17	Ambient Air Density: reading below normal (least severe)
2398	171	2	Ambient Air Temperature: erratic or intermittent signal
2571	2630	3	Engine Charge Air Cooler Outlet Temperature: circuit voltage high / shorted high
2572	2630	4	Engine Charge Air Cooler Outlet Temperature: circuit voltage low / shorted low
2964	105	15	Intake Manifold 1 Temperature: reading above normal (least severe)
3341	107	16	Engine Air Filter Differential Pressure: reading above normal (moderately severe)
3367	4490	9	Specific Humidity Sensor: abnormal update rate
3385	105	18	Intake Manifold 1 Temperature: reading below normal (moderately severe)
3478	2630	2	Engine Charge Air Cooler Outlet Temperature: erratic or intermittent signal
3531	171	9	Ambient Air Temperature: abnormal update rate
5576	107	15	Engine Air Filter Differential Pressure: reading above normal (least severe)

Engine speed and position sensors 16 codes

Code	SPN	FMI	Meaning
115	612	2	Engine Magnetic Speed/Position Lost Both of Two Signals: erratic or intermittent signal
121	190	10	Engine Speed/Position Sensor Circuit: abnormal rate of change
234	190	0	Engine Crankshaft Speed/Position: reading above normal (most severe)
283	1043	3	Engine Speed/Position Sensor #1 (Crankshaft) Supply Voltage Circuit: circuit voltage high / shorted high
284	1043	4	Engine Speed/Position Sensor #1 (Crankshaft) Supply Voltage Circuit: circuit voltage low / shorted low
496	1043	11	Engine Speed/Position Sensor #2 (Camshaft) Supply Voltage: root cause not known
497	1377	2	Multiple Unit Synchronization Switch: erratic or intermittent signal
523	611	2	Auxiliary Intermediate (PTO) Speed Switch Validation: erratic or intermittent signal
689	190	2	Engine Crankshaft Speed/Position: erratic or intermittent signal
731	723	7	Engine Speed / Position Camshaft and Crankshaft Misalignment: not responding / out of adjustment
753	723	2	Engine Speed/Position #2: erratic or intermittent signal
778	723	2	Engine Camshaft Speed / Position Sensor: erratic or intermittent signal
1992	190	16	Engine Crankshaft Speed/Position: reading above normal (moderately severe)
2321	190	2	Engine Crankshaft Speed/Position: erratic or intermittent signal
2322	723	2	Engine Camshaft Speed / Position Sensor: erratic or intermittent signal
2468	190	16	Engine Crankshaft Speed/Position: reading above normal (moderately severe)

Exhaust temperature sensors 33 codes

Code	SPN	FMI	Meaning
479	1318	9	Exhaust Port Temperature Bank Imbalance: abnormal update rate
641	1137	0	High #1 LB Cylinder Exhaust Temperature: reading above normal (most severe)
642	1138	0	High #2 LB Cylinder Exhaust Temperature: reading above normal (most severe)
643	1139	0	High #3 LB Cylinder Exhaust Temperature: reading above normal (most severe)
644	1140	0	High #4 LB Cylinder Exhaust Temperature: reading above normal (most severe)
645	1141	0	High #5 LB Cylinder Exhaust Temperature: reading above normal (most severe)
646	1142	0	High #6 LB Cylinder Exhaust Temperature: reading above normal (most severe)
647	1143	0	High #7 LB Cylinder Exhaust Temperature: reading above normal (most severe)
648	1144	0	High #8 LB Cylinder Exhaust Temperature: reading above normal (most severe)
651	1143	(30,45)	High #1 RB Cylinder Exhaust Temperature: fault
652	1144	(30,45)	High #2 RB Cylinder Exhaust Temperature: fault
653	1145	(30,45)	High #3 RB Cylinder Exhaust Temperature: fault
654	1146	(30,45)	High #4 RB Cylinder Exhaust Temperature: fault
655	1147	(30,45)	High #5 RB Cylinder Exhaust Temperature: fault
656	1148	(30,45)	High #6 RB Cylinder Exhaust Temperature: fault
657	1150	0	High #7 RB Cylinder Exhaust Temperature: reading above normal (most severe)
658	1151	0	High #8 RB Cylinder Exhaust Temperature: reading above normal (most severe)
671	1137	4	Cyl #1 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
672	1138	4	Cyl #2 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
673	1139	4	Cyl #3 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
674	1140	4	Cyl #4 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
675	1141	4	Cyl #5 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
676	1142	4	Cyl #6 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
677	1143	4	Cyl #7 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
678	1144	4	Cyl #8 LB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
721	1143	(30,45)	Cyl #1 RB Exhaust Temp Sens Failed Low: fault
722	1144	(30,45)	Cyl #2 RB Exhaust Temp Sens Failed Low: fault
723	1145	(30,45)	Cyl #3 RB Exhaust Temp Sens Failed Low: fault
724	1146	(30,45)	Cyl #4 RB Exhaust Temp Sens Failed Low: fault
725	1147	(30,45)	Cyl #5 RB Exhaust Temp Sens Failed Low: fault
726	1148	(30,45)	Cyl #6 RB Exhaust Temp Sens Failed Low: fault
727	1151	4	Cyl #7 RB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low
728	1152	4	Cyl #8 RB Exhaust Temp Sens Failed Low: circuit voltage low / shorted low

Intake air heater and cold start 11 codes

Code	SPN	FMI	Meaning
381	626	11	Intake Air Heater (Relay Enable) #1 Circuit: root cause not known
382	626	11	Intake Air Heater (Relay Enable) #2 Circuit: root cause not known
384	626	11	Start Assist Device Control Circuit Error (Ether Injection): root cause not known
2555	729	3	Engine Intake Air Heater 1 Circuit: circuit voltage high / shorted high
2556	729	4	Engine Intake Air Heater 1 Circuit: circuit voltage low / shorted low
3222	520435	12	Glow Plug Module: bad device or component
3494	1081	7	Engine Wait to Start Lamp: not responding / out of adjustment
3555	1081	9	Engine Wait to Start Lamp: abnormal update rate
4252	1081	31	Engine Wait to Start Lamp: condition exists
6556	729	3	Engine Intake Air Heater 1 Circuit: circuit voltage high / shorted high
6557	729	4	Engine Intake Air Heater 1 Circuit: circuit voltage low / shorted low

Engine brake and exhaust back pressure 24 codes

Code	SPN	FMI	Meaning
243	513	4	Engine Brake Driver #1 Circuit: circuit voltage low / shorted low
2182	1072	3	Engine Brake Actuator Driver 1 Circuit: circuit voltage high / shorted high
2183	1072	4	Engine Brake Actuator Driver 1 Circuit: circuit voltage low / shorted low
2363	1073	4	Engine Brake Actuator Driver Output 2 Circuit: circuit voltage low / shorted low
2365	1112	4	Engine Brake Actuator Driver Output 3 Circuit: circuit voltage low / shorted low
2367	1073	3	Engine Brake Actuator Driver Output 2 Circuit: circuit voltage high / shorted high
2368	1112	3	Engine Brake Actuator Driver 3 Circuit: circuit voltage high / shorted high
2373	1209	3	Exhaust Gas Pressure Sensor 1 Circuit: circuit voltage high / shorted high
2374	1209	4	Exhaust Gas Pressure Sensor 1 Circuit: circuit voltage low / shorted low
2554	1209	2	Exhaust Gas Pressure 1: erratic or intermittent signal
2764	1209	16	Exhaust Gas Pressure 1: reading above normal (moderately severe)
4293	5097	3	Engine Brake Active Lamp: circuit voltage high / shorted high
4294	5097	4	Engine Brake Active Lamp: circuit voltage low / shorted low
5271	649	3	Engine Exhaust Back Pressure Regulator Control Circuit: circuit voltage high / shorted high
5272	649	4	Engine Exhaust Back Pressure Regulator Control Circuit: circuit voltage low / shorted low
5273	649	5	Engine Exhaust Back Pressure Regulator Control Circuit: circuit open / current low
5274	5625	2	Engine Exhaust Back Pressure Regulator Position: erratic or intermittent signal
5275	5625	3	Engine Exhaust Back Pressure Regulator Position Sensor Circuit: circuit voltage high / shorted high
5276	5625	4	Engine Exhaust Back Pressure Regulator Position Sensor Circuit: circuit voltage low / shorted low
5277	5626	13	Engine Exhaust Back Pressure Regulator: out of calibration
6418	1072	3	Engine Brake Actuator Driver 1 Circuit: circuit voltage high / shorted high
6419	1072	4	Engine Brake Actuator Driver 1 Circuit: circuit voltage low / shorted low
6421	1073	3	Engine Brake Actuator Driver Output 2 Circuit: circuit voltage high / shorted high
6422	1073	4	Engine Brake Actuator Driver Output 2 Circuit: circuit voltage low / shorted low

Intake throttle and air shutoff 10 codes

Code	SPN	FMI	Meaning
3139	3667	3	Engine Air Shutoff Circuit: circuit voltage high / shorted high
3141	3667	4	Engine Air Shutoff Circuit: circuit voltage low / shorted low
4484	3667	7	Engine Air Shutoff: not responding / out of adjustment
5221	3667	2	Engine Air Shutoff Status: erratic or intermittent signal
5292	520809	31	Excessive Time Since Last Engine Air Shutoff Maintenance Test: condition exists
6493	3464	3	Electronic Throttle Control Actuator Driver Circuit- Voltage above normal, or shorted to high source: circuit voltage high / shorted high
6494	3464	4	Electronic Throttle Control Actuator Driver Circuit- Voltage above normal, or shorted to low source: circuit voltage low / shorted low
6496	3464	5	Electronic Throttle Control Actuator Driver Circuit- Current Below Normal or Open Circuit: circuit open / current low
6497	51	3	Engine Intake Throttle Actuator Position Sensor Circuit- Voltage above normal, or shorted to high source: circuit voltage high / shorted high
6498	51	4	Engine Intake Throttle Actuator Position Sensor Circuit- Voltage above normal, or shorted to low source: circuit voltage low / shorted low

Engine protection 3 codes

Code	SPN	FMI	Meaning
599	640	14	Auxiliary Commanded Dual Output Shutdown: special instructions
3714	1569	31	Engine Protection Torque Derate: condition exists
3931	1109	0	Engine Protection System Approaching Shutdown: reading above normal (most severe)

Accelerator pedal and driver controls 51 codes

Code	SPN	FMI	Meaning
131	91	3	Accelerator Pedal or Lever Position Sensor 1 Circuit: circuit voltage high / shorted high
132	91	4	Accelerator Pedal or Lever Position Sensor 1 Circuit: circuit voltage low / shorted low
133	974	3	Remote Accelerator Pedal or Lever Position Sensor 1 Circuit: circuit voltage high / shorted high
134	974	4	Remote Accelerator Pedal or Lever Position Sensor 1 Circuit: circuit voltage low / shorted low
147	91	1	Accelerator Pedal or Lever Position 1 Sensor Circuit Frequency: reading below normal (most severe)
148	91	0	Accelerator Pedal or Lever Position Sensor 1: reading above normal (most severe)
193	520199	3	Cruise Control (Resistive) Signal Circuit: circuit voltage high / shorted high
194	520199	4	Cruise Control (Resistive) Signal Circuit: circuit voltage low / shorted low
237	644	2	External Speed Command Input (Multiple Unit Synchronization): erratic or intermittent signal
241	84	2	Wheel-Based Vehicle Speed: erratic or intermittent signal
242	84	10	Wheel-Based Vehicle Speed Sensor Circuit tampering has been detected: abnormal rate of change
287	91	19	SAE J1939 Multiplexing Accelerator Pedal Sensor System Error: network data error
349	191	16	Transmission Output Shaft Speed: reading above normal (moderately severe)
387	1043	3	Accelerator Pedal Position Sensor Supply Voltage Circuit: circuit voltage high / shorted high
431	558	2	Accelerator Pedal or Lever Idle Validation Switch: erratic or intermittent signal
432	558	13	Accelerator Pedal or Lever Idle Validation Switch Circuit: out of calibration
443	1043	4	Accelerator Pedal Position Sensor Supply Voltage Circuit: circuit voltage low / shorted low
489	191	18	Transmission Output Shaft Speed: reading below normal (moderately severe)
551	558	4	Accelerator Pedal Idle Validation Circuit: circuit voltage low / shorted low
769	597	3	Brake Switch Circuit: circuit voltage high / shorted high
771	597	4	Brake Switch Circuit: circuit voltage low / shorted low
784	1590	2	Adaptive Cruise Control Mode: erratic or intermittent signal
1239	2623	3	Accelerator Pedal or Lever Position Sensor 2 Circuit: circuit voltage high / shorted high
1241	2623	4	Accelerator Pedal or Lever Position Sensor 2 Circuit: circuit voltage low / shorted low
1242	91	2	Accelerator Pedal or Lever Position Sensor 1: erratic or intermittent signal
1358	91	3	Accelerator Pedal or Lever Position Sensor 1 Circuit: circuit voltage high / shorted high
1359	91	4	Accelerator Pedal or Lever Position Sensor 1 Circuit: circuit voltage low / shorted low
2721	599	2	Cruise Control Set Switch: erratic or intermittent signal
2755	520332	3	Cruise Control (Resistive) #2 Signal Circuit: circuit voltage high / shorted high
2756	520332	4	Cruise Control (Resistive) #2 Signal Circuit: circuit voltage low / shorted low
2998	1632	14	Engine Torque Limit Feature: special instructions
3186	1623	9	Tachograph Output Shaft Speed: abnormal update rate
3326	91	9	SAE J1939 Multiplexed Accelerator Pedal or Lever Sensor System: abnormal update rate
3328	191	9	Transmission Output Shaft Speed: abnormal update rate
3374	1818	31	Roll Over Protection Brake Control Active: condition exists
3488	563	9	Anti-Lock Braking (ABS) Controller: abnormal update rate
3526	84	9	Wheel-Based Vehicle Speed: abnormal update rate
3528	558	9	Accelerator Pedal or Lever Idle Validation Switch: abnormal update rate
3641	748	9	Transmission Output Retarder: abnormal update rate
3735	2884	9	Engine Auxiliary Governor Switch: abnormal update rate
3839	596	7	Cruise Control Enable Switch: not responding / out of adjustment
3841	596	2	Cruise Control Enable Switch: erratic or intermittent signal
3842	596	13	Cruise Control Enable Switch: out of calibration
3843	5603	9	Cruise Control Disable Command: abnormal update rate
3844	5605	31	Cruise Control Pause Command: condition exists
3845	5603	31	Cruise Control Disable Command: condition exists
4215	563	31	Anti-Lock Braking (ABS) Active: condition exists
4526	521	2	Brake Pedal Position: erratic or intermittent signal
5193	1632	31	Engine Torque Limit Feature: condition exists
5248	1623	13	Tachograph Output Shaft Speed: out of calibration
6563	976	2	Auxiliary Intermediate (PTO) Speed Switch Validation: erratic or intermittent signal

Battery, power supply and sensor supply 78 codes

Code	SPN	FMI	Meaning
187	3510	4	Sensor Supply 2 Circuit: circuit voltage low / shorted low
227	3510	3	Sensor Supply 2 Circuit: circuit voltage high / shorted high
238	3511	4	Sensor Supply 3 Circuit: circuit voltage low / shorted low
239	3511	3	Sensor Supply 3 Circuit: circuit voltage high / shorted high
351	3597	12	Injector Power Supply: bad device or component
352	3509	4	Sensor Supply 1 Circuit: circuit voltage low / shorted low
386	3509	3	Sensor Supply 1 Circuit: circuit voltage high / shorted high
434	627	2	Power Lost without Ignition Off: erratic or intermittent signal
441	168	18	Battery 1 Voltage: reading below normal (moderately severe)
442	168	16	Battery 1 Voltage: reading above normal (moderately severe)
487	626	18	Start Enable Device 1 Canister Empty (Ether Injection): reading below normal (moderately severe)
515	3514	3	Sensor Supply 6 Circuit: circuit voltage high / shorted high
516	3514	4	Sensor Supply 6 Circuit: circuit voltage low / shorted low
584	677	3	Starter Relay Driver Circuit: circuit voltage high / shorted high
585	677	4	Starter Relay Driver Circuit: circuit voltage low / shorted low
596	167	16	Electrical Charging System Voltage High: reading above normal (moderately severe)
597	167	18	Electrical Charging System Voltage Low: reading below normal (moderately severe)
598	167	1	Electrical Charging System Voltage Low: reading below normal (most severe)
621	1137	18	Low #1 LB Cylinder Power: reading below normal (moderately severe)
622	1138	18	Low #2 LB Cylinder Power: reading below normal (moderately severe)
623	1139	18	Low #3 LB Cylinder Power: reading below normal (moderately severe)
624	1140	18	Low #4 LB Cylinder Power: reading below normal (moderately severe)
625	1141	18	Low #5 LB Cylinder Power: reading below normal (moderately severe)
626	1142	18	Low #6 LB Cylinder Power: reading below normal (moderately severe)
627	1143	18	Low #7 LB Cylinder Power: reading below normal (moderately severe)
628	1144	18	Low #8 LB Cylinder Power: reading below normal (moderately severe)
631	1143	(45)	Low #1 RB Cylinder Power: fault
632	1144	(45)	Low #2 RB Cylinder Power: fault
633	1145	(45)	Low #3 RB Cylinder Power: fault
634	1146	(45)	Low #4 RB Cylinder Power: fault
635	1147	(45)	Low #5 RB Cylinder Power: fault
636	1148	(45)	Low #6 RB Cylinder Power: fault
637	1151	18	Low #7 RB Cylinder Power: reading below normal (moderately severe)
638	1152	18	Low #8 RB Cylinder Power: reading below normal (moderately severe)
661	1137	16	High #1 LB Cylinder Power: reading above normal (moderately severe)
662	1138	16	High #2 LB Cylinder Power: reading above normal (moderately severe)
663	1139	16	High #3 LB Cylinder Power: reading above normal (moderately severe)
664	1140	16	High #4 LB Cylinder Power: reading above normal (moderately severe)
665	1141	16	High #5 LB Cylinder Power: reading above normal (moderately severe)
666	1142	16	High #6 LB Cylinder Power: reading above normal (moderately severe)
667	1143	16	High #7 LB Cylinder Power: reading above normal (moderately severe)
668	1144	16	High #8 LB Cylinder Power: reading above normal (moderately severe)
711	1143	(45)	High #1 RB Cylinder Power: fault
712	1144	(45)	High #2 RB Cylinder Power: fault
713	1145	(45)	High #3 RB Cylinder Power: fault
714	1146	(45)	High #4 RB Cylinder Power: fault
715	1147	(45)	High #5 RB Cylinder Power: fault
716	1148	(45)	High #6 RB Cylinder Power: fault
717	1150	0	High #7 RB Cylinder Power: reading above normal (most severe)
718	1151	0	High #8 RB Cylinder Power: reading above normal (most severe)
951	166	2	Cylinder Power Imbalance between cylinders: erratic or intermittent signal
1117	3597	2	Power Supply Lost With Ignition On: erratic or intermittent signal
1695	3513	3	Sensor Supply 5: circuit voltage high / shorted high
1696	3513	4	Sensor Supply 5: circuit voltage low / shorted low
1776	2634	3	Power Relay Driver Circuit: circuit voltage high / shorted high
1777	2634	4	Power Relay Driver Circuit: circuit voltage low / shorted low
1938	3597	18	ECU Power Output Supply Voltage 1: reading below normal (moderately severe)
1939	3597	3	ECU Power Output Supply Voltage 1: circuit voltage high / shorted high
1941	3597	4	ECU Power Output Supply Voltage 1: circuit voltage low / shorted low
2185	3512	3	Sensor Supply 4 Circuit: circuit voltage high / shorted high
2186	3512	4	Sensor Supply 4 Circuit: circuit voltage low / shorted low
2263	1800	16	Battery Temperature: reading above normal (moderately severe)
2264	1800	18	Battery Temperature: reading below normal (moderately severe)
2738	626	3	Start Enable Device 1 Circuit (Ether Injection): circuit voltage high / shorted high
2739	626	4	Start Enable Device 1Circuit (Ether Injection): circuit voltage low / shorted low
3419	5125	3	Sensor Supply 7 Circuit: circuit voltage high / shorted high
3421	5125	4	Sensor Supply 7 Circuit: circuit voltage low / shorted low
3724	168	17	Battery 1 Voltage: reading below normal (least severe)
3737	1675	31	Engine Starter Mode Overcrank Protection: condition exists
4951	6655	3	Maintain ECU Power Lamp: circuit voltage high / shorted high
4952	6655	4	Maintain ECU Power Lamp: circuit voltage low / shorted low
4953	3353	3	Alternator 1 Status: circuit voltage high / shorted high
4954	3353	4	Alternator 1 Status: circuit voltage low / shorted low
6256	168	15	Battery 1 Voltage: reading above normal (least severe)
6257	168	17	Battery 1 Voltage: reading below normal (least severe)
6499	3597	17	ECU Power Output Supply Voltage 1: reading below normal (least severe)
6511	6655	3	Maintain ECU Power Lamp: circuit voltage high / shorted high
6512	6655	4	Maintain ECU Power Lamp: circuit voltage low / shorted low

ECM, network and data link 48 codes

Code	SPN	FMI	Meaning
111	629	12	ECM Critical Internal Failure: bad device or component
184	609	2	ECM Identification Input State Error: erratic or intermittent signal
185	639	2	ECM Network Communication Error: erratic or intermittent signal
211	1484	31	Additional OEM/Vehicle Diagnostic Codes have been logged. Check other ECM's for DTC's.: condition exists
269	1195	2	Antitheft Password Valid Indicator: erratic or intermittent signal
285	639	9	SAE J1939 Multiplexing PGN Timeout Error: abnormal update rate
286	639	13	SAE J1939 Multiplexing Configuration Error: out of calibration
288	974	19	SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Position Sensor System: network data error
291	625	9	Proprietary Datalink Error (OEM/Vehicle Datalink): abnormal update rate
299	1384	31	Engine Shutdown Commanded by J1939: condition exists
319	251	2	Real Time Clock: erratic or intermittent signal
341	630	2	ECM: erratic or intermittent signal
342	630	13	ECM: out of calibration
343	629	12	ECM Warning Internal Hardware Failure: bad device or component
346	630	12	ECM: bad device or component
414	608	9	Data Communication error over the J1587 data link Circuit: abnormal update rate
426	639	2	J1939 Network #1: erratic or intermittent signal
427	639	9	SAE J1939 Datalink: abnormal update rate
697	1136	3	Engine ECU Temperature Sensor Circuit: circuit voltage high / shorted high
698	1136	4	Engine ECU Temperature Sensor Circuit: circuit voltage low / shorted low
699	1136	2	Engine ECU Temperature: erratic or intermittent signal
1256	1563	2	Control Module Identification Input State Error: erratic or intermittent signal
1257	1563	2	Control Module Identification Input State Error: erratic or intermittent signal
1515	91	19	SAE J1939 Multiplexed Accelerator Pedal or Lever Sensor System: network data error
2661	629	31	At Least One Unacknowledged Most Severe Fault: condition exists
2662	629	31	At Least One Unacknowledged Moderately Severe Fault: condition exists
3213	1623	19	Tachograph Output Shaft Speed: network data error
3298	1194	13	Anti-theft Encryption Seed: out of calibration
3329	1231	2	J1939 Network #2: erratic or intermittent signal
3331	1235	2	J1939 Network #3: erratic or intermittent signal
3368	4490	19	Specific Humidity Sensor: network data error
3371	1172	19	Turbocharger 1 Compressor Intake Temperature Sensor: network data error
3373	1176	19	Turbocharger 1 Compressor Intake Pressure: network data error
3418	191	19	Transmission Output Shaft Speed: network data error
3525	84	19	Wheel-Based Vehicle Speed: network data error
3527	558	19	Accelerator Pedal or Lever Idle Validation Switch: network data error
3532	171	19	Ambient Air Temperature: network data error
3535	1213	9	Malfunction Indicator Lamp: abnormal update rate
3556	1081	19	Engine Wait to Start Lamp: network data error
3614	111	19	Coolant Level Sensor: network data error
3697	630	12	ECM Calibration Memory: bad device or component
4437	1668	2	J1939 Network #4: erratic or intermittent signal
4517	237	13	Vehicle Identification Number: out of calibration
4721	237	31	Vehicle Identification Number: condition exists
4722	237	2	Vehicle Identification Number: erratic or intermittent signal
5133	2006	9	Source Address 6: abnormal update rate
5939	520968	9	Machine Constrained Operation- Abnormal Update Rate. No Communication or an invalid data transfer rate has been detected on the J1939 data link between the ECM and the machine electronic control unit.: abnormal update rate
5941	520968	19	Machine Constrained Operation- Received Network Data in Error. The received J1939 datalink message was not valid.: network data error

Auxiliary inputs, outputs and generator controls 34 codes

Code	SPN	FMI	Meaning
292	441	14	Auxiliary Temperature Sensor Input 1: special instructions
293	441	3	Auxiliary Temperature Sensor Input 1 Circuit: circuit voltage high / shorted high
294	441	4	Auxiliary Temperature Sensor Input 1 Circuit: circuit voltage low / shorted low
296	1388	14	Auxiliary Pressure Sensor Input 2: special instructions
297	1388	3	Auxiliary Pressure Sensor Input 2 Circuit: circuit voltage high / shorted high
298	1388	4	Auxiliary Pressure Sensor Input 2 Circuit: circuit voltage low / shorted low
338	1267	3	Idle Shutdown Vehicle Accessories Relay Driver Circuit: circuit voltage high / shorted high
339	1267	4	Idle Shutdown Vehicle Accessories Relay Driver Circuit: circuit voltage low / shorted low
385	620	3	OEM Sensor Supply Voltage Circuit: circuit voltage high / shorted high
444	620	18	OEM Sensor Supply Voltage Low: reading below normal (moderately severe)
524	113	2	OEM Alternate Droop Switch Validation: erratic or intermittent signal
527	702	3	Auxiliary Input/Output 2 Circuit: circuit voltage high / shorted high
528	93	2	Auxiliary Alternate Torque Validation Switch: erratic or intermittent signal
529	703	3	Auxiliary Input/Output 3 Circuit: circuit voltage high / shorted high
779	703	11	Auxiliary Equipment Sensor Input # 3 (OEM Switch): root cause not known
1427	4185	31	Overspeed Shutdown Relay Driver Diagnostic has detected an error: condition exists
1429	4187	31	High Engine Temperature (HET) Shutdown Relay Driver Diagnostic has detected an error: condition exists
1432	4223	31	Pre-High Engine Temperature Warning Relay Driver Diagnostic has detected an error: condition exists
1539	1387	3	Auxiliary Pressure Sensor Input 1 Circuit: circuit voltage high / shorted high
1621	1387	4	Auxiliary Pressure Sensor Input 1 Circuit: circuit voltage low / shorted low
2194	1387	11	Auxiliary Equipment Sensor Input # 2 (OEM Pressure Sensor) Engine Protection: root cause not known
2195	703	14	Auxiliary Equipment Sensor Input # 3 (OEM Switch) Engine Protection: special instructions
2557	697	3	Auxiliary PWM Driver 1 Circuit: circuit voltage high / shorted high
2558	697	4	Auxiliary PWM Driver 1 Circuit: circuit voltage low / shorted low
3694	4184	4	Gain Adjust Potentiometer Circuit: circuit voltage low / shorted low
3695	4182	4	Generator Output Frequency Adjust Potentiometer Circuit: circuit voltage low / shorted low
3696	4183	4	Droop Adjust Potentiometer Circuit: circuit voltage low / shorted low
3765	442	3	Auxiliary Temperature Sensor Input 2 Circuit: circuit voltage high / shorted high
3766	442	4	Auxiliary Temperature Sensor Input 2 Circuit: circuit voltage low / shorted low
4724	702	5	Auxiliary Input/Output 2 Circuit: circuit open / current low
4725	702	6	Auxiliary Input/Output 2 Circuit: circuit grounded / current high
4734	701	14	Auxiliary Input/Output 1: special instructions
6583	441	14	Auxiliary Temperature Sensor Input 1: special instructions
6584	1388	14	Auxiliary Pressure Sensor Input 2: special instructions

Engine control and configuration 5 codes

Code	SPN	FMI	Meaning
3715	188	16	Engine Speed At Idle: reading above normal (moderately severe)
3716	188	18	Engine Speed At Idle: reading below normal (moderately severe)
3838	2978	9	Estimated Engine Parasitic Losses: abnormal update rate
5215	520791	2	Engine Boost Curve Selection: erratic or intermittent signal
5291	520808	31	Engine Emergency Shutdown Switch Actived: condition exists

FAQ

Cummins code questions

How do I read a Cummins fault code?

Cummins fault codes are numbers like 3714 or 1922. Each one maps to a J1939 SPN (the part or system) and FMI (the type of failure). Many dashes and scan tools show the SPN and FMI instead. Our lookup accepts either.

What is the difference between SPN, FMI and a Cummins fault code?

SPN (Suspect Parameter Number) is an industry-standard number for the component, like 3251 for DPF differential pressure. FMI (Failure Mode Identifier) is 0-31 and says what's wrong, like too high, too low, or shorted. Cummins assigns its own fault code number to each SPN and FMI combination.

What does a red stop lamp mean on a Cummins engine?

Stop the engine as soon as it is safe. Cummins uses the red lamp for faults that can damage the engine or are unsafe to keep running.

Do these codes apply to my Ram Cummins pickup?

Ram 2500 and 3500 trucks with the 6.7 Cummins mostly show standard OBD-II P-codes on a regular scan tool. The Cummins fault code numbers here are what Cummins diagnostic software (INSITE) shows, and what medium-duty and heavy-duty trucks and equipment display on the dash.

Diesel down in the Midlands?

We work on Cummins-powered pickups, vans and medium-duty trucks across Lexington, Columbia and the Midlands, on site at your yard or roadside.

Book a visit Call or text (803) 440-7443