What does code P24B8 mean?

Q: What does code P24B8 mean?

EVAP System Leak Detection Pump Pressure Sensor Circuit. P24B8 indicates that the engine computer has detected an electrical fault in the pressure sensor circuit that monitors the evaporative emission (EVAP) system leak detection pump. The computer expects a specific voltage or signal from this sensor when the pump runs its self-test, and the reading falls outside the acceptable range, so the check engine light is set.

DTC codes / P24xx · Auxiliary emission controls / P24B8

P24B8EVAP System Leak Detection Pump Pressure Sensor Circuit

P24B8 indicates that the engine computer has detected an electrical fault in the pressure sensor circuit that monitors the evaporative emission (EVAP) system leak detection pump. The computer expects a specific voltage or signal from this sensor when the pump runs its self-test, and the reading falls outside the acceptable range, so the check engine light is set.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

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.