OBD-II code · Powertrain (generic, extended)
P24FA Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Low
The control circuit of the aftertreatment purge valve reads stuck low — usually a short to ground or a failed low-side driver. The valve is energised continuously when it should be off, or the diagnostic feedback voltage is pulled below threshold.
Is it safe to drive with P24FA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyControl wire shorted to ground
- PossibleFailed low-side driver stuck on
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Aftertreatment Purge Valve, Solenoid Driver
Related codes
- P24F8Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit
- P24F7Exhaust Aftertreatment Fuel Air Purge Valve Stuck Closed
- P24F9Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Range/Performance
- P24FBExhaust Aftertreatment Fuel Air Purge Valve Control Circuit High
- P24FCParticulate Matter Sensor Heater Control Circuit Driver Current/Temperature Too High
- P24FDParticulate Filter A Incorrect
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.