Powertrain
generic / SAE
P20D7
Exhaust Aftertreatment Fuel Supply Control Circuit/Open
The control circuit for the dedicated aftertreatment fuel supply pump or solenoid is open — HC dosing into the exhaust will fail.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / D7
Possible causes
- Winding or coil open high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 150–1200 €
- Estimated time: 0.7–3.5 h
- Component: aftertreatment fuel pump
- Component: aftertreatment fuel supply solenoid
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012