What does code P2B91 mean?

Q: What does code P2B91 mean?

Turbocharger/Supercharger B Temperature Sensor Circuit High. P2B91 means the engine computer has detected an abnormally high voltage signal from the turbocharger or supercharger B temperature sensor circuit. The sensor is responsible for reporting the temperature of the compressed air after the second forced-induction stage, and a high voltage typically indicates an open circuit, a short to voltage, or a sensor that has failed in a way that drives the signal above its normal range.

DTC codes / P2Bxx · Hybrid propulsion / P2B91

P2B91Turbocharger/Supercharger B Temperature Sensor Circuit High

P2B91 means the engine computer has detected an abnormally high voltage signal from the turbocharger or supercharger B temperature sensor circuit. The sensor is responsible for reporting the temperature of the compressed air after the second forced-induction stage, and a high voltage typically indicates an open circuit, a short to voltage, or a sensor that has failed in a way that drives the signal above its normal range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

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