What does code P27BA mean?

Q: What does code P27BA mean?

Pressure Control Solenoid N Stuck On. P27BA indicates that the transmission control module (TCM) has detected a fault where pressure control solenoid N is stuck in the energized or 'on' state, meaning it is commanding hydraulic pressure when it should be off or at a lower duty cycle. The TCM monitors the solenoid's electrical circuit and hydraulic response, and when the commanded state does not match the actual state, it sets this code and typically illuminates the warning light.

DTC codes / P27xx · Transmission / P27BA

P27BAPressure Control Solenoid N Stuck On

P27BA indicates that the transmission control module (TCM) has detected a fault where pressure control solenoid N is stuck in the energized or 'on' state, meaning it is commanding hydraulic pressure when it should be off or at a lower duty cycle. The TCM monitors the solenoid's electrical circuit and hydraulic response, and when the commanded state does not match the actual state, it sets this code and typically illuminates the warning light.

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.