What does code P2755 mean?

Q: What does code P2755 mean?

Transmission Fluid Cooler Control Circuit High. P2755 indicates that the transmission control module (TCM) has detected an abnormally high voltage on the transmission fluid cooler control circuit, which is typically a pulse-width modulated (PWM) output that regulates a cooling fan or bypass valve. The TCM expects a certain voltage range on the control wire, and a reading above the calibrated threshold for a set time triggers this code, often due to an open circuit, short to power, or a failed actuator.

DTC codes / P27xx · Transmission / P2755

P2755Transmission Fluid Cooler Control Circuit High

P2755 indicates that the transmission control module (TCM) has detected an abnormally high voltage on the transmission fluid cooler control circuit, which is typically a pulse-width modulated (PWM) output that regulates a cooling fan or bypass valve. The TCM expects a certain voltage range on the control wire, and a reading above the calibrated threshold for a set time triggers this code, often due to an open circuit, short to power, or a failed actuator.

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.