P24FA
Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Low
What it means
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?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Control wire shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Failed low-side driver stuck on
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P24FA freeNo credit card required