Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / FA
Possible causes
- Control wire shorted to ground high
- Failed low-side driver stuck on medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–700 €
- Estimated time: 0.5–2 h
- Component: aftertreatment purge valve
- Component: solenoid driver
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012