OBD-II code · Powertrain (generic, extended)
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.
Is it safe to drive with P20D7?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyWinding or coil open
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.7–3.5 h
- Emissions test
- Likely to fail
- Parts involved
- Aftertreatment Fuel Pump, Aftertreatment Fuel Supply Solenoid
Related codes
- P20D4Exhaust Aftertreatment Fuel Injector B Control Circuit High
- P20D5Exhaust Aftertreatment Fuel Injector B Stuck Open
- P20D6Exhaust Aftertreatment Fuel Injector B Stuck Closed
- P20D8Exhaust Aftertreatment Fuel Supply Control Performance
- P20D9Exhaust Aftertreatment Fuel Supply Control Circuit Low
- P20DAExhaust Aftertreatment Fuel Supply Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.