What does code P0A37 mean?

Q: What does code P0A37 mean?

Generator Temperature Sensor Circuit Range/Performance. P0A37 indicates that the generator temperature sensor circuit is reporting a voltage or resistance outside the expected range for the current operating conditions, or that the signal is erratic. The powertrain control module (PCM) monitors this sensor to protect the generator from overheating, and it sets the code when the signal does not correlate with other temperature inputs or falls outside a calibrated window.

DTC codes / P0Axx · Hybrid propulsion / P0A37

P0A37Generator Temperature Sensor Circuit Range/Performance

P0A37 indicates that the generator temperature sensor circuit is reporting a voltage or resistance outside the expected range for the current operating conditions, or that the signal is erratic. The powertrain control module (PCM) monitors this sensor to protect the generator from overheating, and it sets the code when the signal does not correlate with other temperature inputs or falls outside a calibrated window.

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.