DTC codes / P24xx · Auxiliary emission controls / P24F8
P24F8 indicates that the powertrain control module (PCM) has detected an electrical fault in the control circuit for the exhaust aftertreatment fuel air purge valve, which is used to manage fuel vapor and air flow in the exhaust aftertreatment system. The computer monitors the circuit for expected voltage or current and sets this code when the signal is out of range, indicating an open, short, or component failure.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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