DTC codes / P27xx · Transmission / P2729
P2729 means the transmission control module (TCM) has detected an abnormally low voltage or current on the control circuit for pressure control solenoid 'E', which is one of the solenoids that regulates hydraulic pressure inside the automatic transmission. The TCM commands a specific current to the solenoid and monitors the circuit; when the feedback falls below the expected threshold, it flags the circuit as low and stores this code.
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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