DTC codes / P27xx · Transmission / P2739
P2739 means the transmission control module (TCM) has detected a high-voltage condition on the control circuit for pressure control solenoid 'F', which is a shift-pressure solenoid inside the transmission valve body. The TCM commands a specific current to the solenoid and monitors the return voltage; when the circuit voltage stays above the expected threshold, the TCM flags the circuit as high and typically commands a fail-safe or limp mode.
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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