What does code P275D mean?

Q: What does code P275D mean?

Transmission Fluid Temperature Sensor D Circuit High. P275D indicates that the transmission control module (TCM) has detected an abnormally high voltage on the signal circuit for transmission fluid temperature sensor D, which is typically a second or auxiliary sensor used for monitoring fluid temperature. The TCM interprets this high voltage as a sensor signal that is out of range, often because the circuit is open or shorted to voltage, and it may default to a calculated fluid temperature to protect the transmission.

DTC codes / P27xx · Transmission / P275D

P275DTransmission Fluid Temperature Sensor D Circuit High

P275D indicates that the transmission control module (TCM) has detected an abnormally high voltage on the signal circuit for transmission fluid temperature sensor D, which is typically a second or auxiliary sensor used for monitoring fluid temperature. The TCM interprets this high voltage as a sensor signal that is out of range, often because the circuit is open or shorted to voltage, and it may default to a calculated fluid temperature to protect the transmission.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

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