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DTC codes / P27xx · Transmission / P27F2
P27F2 indicates that the transmission control module (TCM) has detected an abnormally high voltage on the circuit for the 'B' position sensor or switch within the transmission range control system. This sensor tells the TCM the current gear selector position, and a high voltage reading typically means the circuit is open, shorted to power, or the sensor itself 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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