What does code P27CF mean?

Q: What does code P27CF mean?

Pressure Control Solenoid R Control Circuit Low. P27CF indicates that the transmission control module (TCM) has detected a low-voltage condition on the control circuit for pressure control solenoid R, which is used to regulate hydraulic pressure inside the transmission. The TCM monitors the circuit and sets this code when the signal voltage falls below the expected threshold, often due to a short to ground, an open circuit, or a faulty solenoid.

DTC codes / P27xx · Transmission / P27CF

P27CFPressure Control Solenoid R Control Circuit Low

P27CF indicates that the transmission control module (TCM) has detected a low-voltage condition on the control circuit for pressure control solenoid R, which is used to regulate hydraulic pressure inside the transmission. The TCM monitors the circuit and sets this code when the signal voltage falls below the expected threshold, often due to a short to ground, an open circuit, or a faulty solenoid.

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.