DTC codes / P27xx · Transmission / P2754
P2754 indicates that the transmission control module (TCM) has detected an abnormally low voltage or current on the control circuit for the transmission fluid cooler, which is often an electrically driven pump or fan. The TCM expects a specific electrical load when it commands the cooler on, and a low reading means the circuit is grounded, open, or the cooler actuator has failed.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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