Powertrain
generic / SAE
P249F
Excessive Time To Enter Closed Loop Particulate Filter Regeneration Control
The DPF regeneration controller cannot transition into its closed-loop temperature control quickly enough - typically because EGT does not rise to setpoint within the calibrated window.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 9F
Possible causes
- EGT rise too slow high
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1000 €
- Estimated time: 1–4 h
- Component: dpf b1
- Component: exhaust gas temperature sensor b1
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012