Powertrain
generic / SAE
P246B
Vehicle Conditions Incorrect for Particulate Filter Regeneration
The driving pattern (short trips, low speed, frequent stops) does not provide the load and EGT needed for passive or active DPF regeneration. Filter loading rises until limit reached.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 6B
Possible causes
- Short-trip operation high
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 20–200 €
- Estimated time: 0–1 h
- Component: dpf b1
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012