What does code P25B5 mean?

Q: What does code P25B5 mean?

Turbocharger/Supercharger Wastegate B Stuck Open. P25B5 indicates that the engine control module (ECM) has detected a fault with the turbocharger or supercharger wastegate B circuit, specifically that the wastegate is stuck in the open position. The ECM typically commands the wastegate actuator to move and monitors the resulting change in boost pressure or actuator position; when the expected response is not seen, it sets this code.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25B5

P25B5Turbocharger/Supercharger Wastegate B Stuck Open

P25B5 indicates that the engine control module (ECM) has detected a fault with the turbocharger or supercharger wastegate B circuit, specifically that the wastegate is stuck in the open position. The ECM typically commands the wastegate actuator to move and monitors the resulting change in boost pressure or actuator position; when the expected response is not seen, it sets this code.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.