What does code P27CB mean?

Q: What does code P27CB mean?

Pressure Control Solenoid R Electrical. P27CB indicates that the transmission control module (TCM) has detected an electrical fault in the circuit for pressure control solenoid R, which is one of several solenoids that regulate hydraulic pressure inside the automatic transmission. The TCM monitors the solenoid's electrical current and voltage and sets this code when the readings fall outside the expected range, indicating an open circuit, short circuit, or excessive resistance in the solenoid or its wiring.

DTC codes / P27xx · Transmission / P27CB

P27CBPressure Control Solenoid R Electrical

P27CB indicates that the transmission control module (TCM) has detected an electrical fault in the circuit for pressure control solenoid R, which is one of several solenoids that regulate hydraulic pressure inside the automatic transmission. The TCM monitors the solenoid's electrical current and voltage and sets this code when the readings fall outside the expected range, indicating an open circuit, short circuit, or excessive resistance in the solenoid or its wiring.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.