Code result
P24FB
Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit High
Moderate severity
What it means
The control circuit of the aftertreatment purge valve reads stuck high — typically a short to battery voltage or an open ground/return path. The driver cannot pull the line low to actuate the valve.
Is it safe to drive?
Use caution
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 battery voltage
highOne of the most commonly reported causes for this code — check this first.
Open ground or open coil
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
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