Powertrain
generic / SAE
P20D0
Exhaust Aftertreatment Fuel Injector A Stuck Closed
Exhaust Aftertreatment Fuel Injector A Stuck Closed: the control module has detected this fault condition. This injector doses fuel into the exhaust to raise temperature for diesel particulate-filter regeneration; it does not fuel the engine.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / D0
Possible causes
- Injector stuck closed high
- Carbon or debris buildup preventing free movement low
- Component wear with age - mechanical play low
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 250–2000 €
- Estimated time: 1–5 h
- Component: aftertreatment fuel injector
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012