Powertrain
generic / SAE
P20D8
Exhaust Aftertreatment Fuel Supply Control Performance
Aftertreatment fuel supply is electrically OK but does not deliver the commanded pressure or flow during regeneration — weak pump or partial blockage.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / D8
Possible causes
- Pump weak — flow or pressure below threshold high
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 150–1200 €
- Estimated time: 0.7–3.5 h
- Component: aftertreatment fuel pump
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012