OBD-II code · Powertrain (generic, extended)
P244B Diesel Particulate Filter Differential Pressure Sensor Offset
At engine off, the DPF differential pressure sensor does not return to zero within the allowed offset window. The static offset is too large to be ignored.
Is it safe to drive with P244B?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor zero-point drift
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Dpf Diff Pressure Sensor
Related codes
- P2448AIR System High Air Flow Bank 1
- P2449AIR System High Air Flow Bank 2
- P244ADiesel Particulate Filter Differential Pressure Too Low
- P244CExhaust Temperature Too Low For Particulate Filter Regeneration Bank 1
- P244DExhaust Temperature Too High For Particulate Filter Regeneration Bank 1
- P244EExhaust Temperature Too Low For Particulate Filter Regeneration Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.