What does code P27EA mean?

Q: What does code P27EA mean?

Transmission Range Control B Circuit High. P27EA means the transmission control module (TCM) has detected a high voltage condition on the 'B' circuit of the transmission range control system, which is responsible for confirming the gear selector position. The TCM expects a specific voltage or signal pattern on this circuit, and a reading above the normal threshold indicates an open circuit, short to power, or a faulty component.

DTC codes / P27xx · Transmission / P27EA

P27EATransmission Range Control B Circuit High

P27EA means the transmission control module (TCM) has detected a high voltage condition on the 'B' circuit of the transmission range control system, which is responsible for confirming the gear selector position. The TCM expects a specific voltage or signal pattern on this circuit, and a reading above the normal threshold indicates an open circuit, short to power, or a faulty component.

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.