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DTC codes / P27xx · Transmission / P27F0

P27F0Transmission Range Control B Position Sensor/Switch Circuit Range/Performance

P27F0 indicates that the transmission control module (TCM) has detected an out-of-range or erratic signal from the transmission range control B position sensor or switch circuit. This sensor tells the computer the physical position of the gear selector or internal shift mechanism, and the code sets when the voltage or switch state does not match expected values for the commanded range.

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.

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