What does code P274A mean?

Q: What does code P274A mean?

Transmission Fluid Temperature Sensor C Circuit. P274A indicates that the transmission control module has detected an abnormal signal on the circuit for transmission fluid temperature sensor C, which is a third temperature-sensing element used in some automatic transmissions. The computer compares the sensor's voltage or resistance reading against expected values and sets this code when the signal falls outside the valid range or behaves erratically.

DTC codes / P27xx · Transmission / P274A

P274ATransmission Fluid Temperature Sensor C Circuit

P274A indicates that the transmission control module has detected an abnormal signal on the circuit for transmission fluid temperature sensor C, which is a third temperature-sensing element used in some automatic transmissions. The computer compares the sensor's voltage or resistance reading against expected values and sets this code when the signal falls outside the valid range or behaves erratically.

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.