What does code P0A31 mean?

Q: What does code P0A31 mean?

Drive Motor B Temperature Sensor Circuit Range/Performance. P0A31 indicates that the hybrid or electric vehicle control module has detected an out-of-range or erratic signal from the temperature sensor monitoring drive motor B, which is the second traction motor in a multi-motor system. The computer compares the sensor voltage against expected values for the current operating conditions and flags the circuit when the reading falls outside a calibrated window or changes too abruptly.

DTC codes / P0Axx · Hybrid propulsion / P0A31

P0A31Drive Motor B Temperature Sensor Circuit Range/Performance

P0A31 indicates that the hybrid or electric vehicle control module has detected an out-of-range or erratic signal from the temperature sensor monitoring drive motor B, which is the second traction motor in a multi-motor system. The computer compares the sensor voltage against expected values for the current operating conditions and flags the circuit when the reading falls outside a calibrated window or changes too abruptly.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.