What does code P274C mean?

Q: What does code P274C mean?

Transmission Fluid Temperature Sensor C Circuit Low. P274C means the transmission control module (TCM) has detected an abnormally low voltage signal on the circuit for Transmission Fluid Temperature Sensor C, which is one of several temperature sensors inside the transmission. The TCM compares the sensor's return voltage to expected limits and sets this code when the signal stays below the low threshold for a calibrated time, indicating a short to ground, an open circuit, or a failed sensor.

DTC codes / P27xx · Transmission / P274C

P274CTransmission Fluid Temperature Sensor C Circuit Low

P274C means the transmission control module (TCM) has detected an abnormally low voltage signal on the circuit for Transmission Fluid Temperature Sensor C, which is one of several temperature sensors inside the transmission. The TCM compares the sensor's return voltage to expected limits and sets this code when the signal stays below the low threshold for a calibrated time, indicating a short to ground, an open circuit, or a failed sensor.

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.