P244A: Diesel Particulate Filter Differential Pressure Too Low
Pressure across the DPF is lower than expected, which can mean a cracked filter or a sensor hose problem.
Green, yellow, red: three ways P244A can look
The same code can be a quick fix or a reason to pull over. Match your situation to the closest example.
Keep an eye on it
Set once.
Schedule a repair
Returns. Diagnose soon.
Stop and get help
Derate. Stop and get help.
Symptoms you might notice
- DPF light
Common causes, cheapest first
- Disconnected or cracked sensor hose
- Cracked DPF
- Faulty sensor
What you can check before calling
- Inspect sensor hoses
A code points to a system, not a part. Replacing parts based on the code alone is how people spend money without fixing the problem. Testing confirms the cause first.
Want the full story? Read our guide: DPF regeneration explained: passive, active and forced.
Generic codes (second character 0) mean the same thing on every vehicle. Some manufacturers add their own details, so check service information for your exact vehicle.
Related codes
More diesel & cummins codes
- P2463
Diesel Particulate Filter Restriction - Soot Accumulation - P242F
Diesel Particulate Filter Restriction - Ash Accumulation - P2459
Diesel Particulate Filter Regeneration Frequency - P2454
Diesel Particulate Filter Pressure Sensor A Circuit Low - P2455
Diesel Particulate Filter Pressure Sensor A Circuit High - P244B
Diesel Particulate Filter Differential Pressure Too High
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 P244A mean?
P244A means "Diesel Particulate Filter Differential Pressure Too Low". Pressure across the DPF is lower than expected, which can mean a cracked filter or a sensor hose problem.
Can I drive with code P244A?
It depends on what the vehicle is doing. Green: Set once. Yellow: Returns. Diagnose soon. Red: Derate. Stop and get help.
What causes P244A?
The most common causes are: disconnected or cracked sensor hose; cracked DPF; faulty sensor.
Is P244A a serious code?
It can be. Derate. Stop and get help.
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