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DTC codes / P24xx · Auxiliary emission controls / P24BC

P24BCEVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent

P24BC means the engine computer has seen the evaporative emissions (EVAP) leak detection pump pressure sensor signal drop out or jump erratically, but only intermittently rather than failing completely. The computer is flagging a non-constant electrical or signal fault in the sensor circuit that monitors the pressure the leak detection pump generates during an EVAP system self-test.

SystemPowertrain
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaAuxiliary emission controls

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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