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DTC codes / P27xx · Transmission / P27EF

P27EFTransmission Range Control B Position Sensor/Switch Circuit/Open

P27EF indicates that the transmission control module (TCM) has detected an open circuit or invalid signal from the 'B' position sensor or switch within the transmission range control system. This sensor reports the physical position of the gear selector or internal shift mechanism, and an open circuit means the TCM cannot verify that the transmission is in the commanded range.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaTransmission
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