Cummins fault code 1139
Injector Solenoid Driver Cylinder 1: not responding / out of adjustment
What it means
Cummins' description: Injector Solenoid Driver Cylinder 1 - Mechanical system not responding or out of adjustment.
SPN 651 is Engine Injector Cylinder #01. FMI 7 means the ECM commanded something to move or change and it didn't respond the way it should: sticking, binding, worn, or out of adjustment.
Each cylinder has an electronically controlled fuel injector. The ECM watches each injector's circuit and how each cylinder is contributing, and flags misfires or fueling errors.
What the lamp means
An amber (yellow) warning lamp means the engine can usually keep running, but the fault should be repaired soon, ideally the same day.
Green, yellow, red: three ways this can look
The same code can be a quick fix or a reason to shut down. Match your situation to the closest example.
Keep an eye on it
A single injector or misfire code that cleared and the engine runs smooth.
Schedule a repair
Rough running, smoke, or a misfire or injector code that keeps coming back. Schedule diagnosis. A bad injector can wash down a cylinder and hurt fuel economy.
Stop and get help
Heavy knocking, a severe miss, a red lamp, or smoke pouring out. Shut it down. A stuck-open injector can hydrolock or melt a piston.
Common causes
The sensor reading itself is out of range or the condition is real, so look at the system:
- Worn or sticking injector
- Low compression in that cylinder
- Fuel supply or rail pressure problem
- Air in the fuel
What you can check before calling
- Note rough idle, shaking, white or black smoke, or a knocking sound
- Check whether the misfire is constant or only cold
- Check recent fuel filter service and fuel quality
Clearing the code without fixing the cause usually brings it right back, and on emissions systems it can restart derate timers.
Engines and sources
Listed by Cummins for: QSX 15, QSG 12. Cummins uses the same fault code numbers across its electronic engines, including on-highway models like the ISB/B6.7, ISL/L9 and ISX/X15, though not every code applies to every engine or software level. Source: Cummins Tier 4 Fault Codes. Always confirm with Cummins service information (QuickServe) for your engine serial number.
Same SPN, other failure types
Related Injectors and misfire codes
- 1141 SPN 652 FMI 7
Injector Solenoid Driver Cylinder 2: not responding / out of adjustment - 1142 SPN 653 FMI 7
Injector Solenoid Driver Cylinder 3: not responding / out of adjustment - 1143 SPN 654 FMI 7
Injector Solenoid Driver Cylinder 4: not responding / out of adjustment - 1144 SPN 655 FMI 7
Injector Solenoid Driver Cylinder 5: not responding / out of adjustment - 1145 SPN 656 FMI 7
Injector Solenoid Driver Cylinder 6: not responding / out of adjustment - 1548 SPN 657 FMI 5
Injector Solenoid Driver Cylinder 7 Circuit: circuit open / current low
Look up another code
Cummins fault code (like 1922), J1939 SPN and FMI (like SPN 3251 FMI 0), or an OBD-II code (like P0420).
Questions
What does Cummins fault code 1139 mean?
Cummins fault code 1139 is J1939 SPN 651 FMI 7: Injector Solenoid Driver Cylinder 1 - Mechanical system not responding or out of adjustment. In plain terms: injector solenoid driver cylinder 1: not responding / out of adjustment.
Can I keep driving with Cummins code 1139?
Usually for a short time, if the engine runs normally and no other warnings are on. Get it diagnosed soon, because many amber codes lead to a derate if ignored. Look at the green, yellow and red examples on this page to judge your situation.
What is the SPN and FMI for Cummins code 1139?
SPN 651 identifies the part or system (Engine Injector Cylinder #01). FMI 7 describes the type of failure: not responding / out of adjustment.
What usually causes Cummins code 1139?
The most common causes are: worn or sticking injector; low compression in that cylinder; fuel supply or rail pressure problem.
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.