What does code P27DA mean?

Q: What does code P27DA mean?

Pressure Control Solenoid T Stuck On. P27DA indicates that the transmission control module (TCM) has detected a fault where pressure control solenoid T is stuck in the energized or 'on' state. The TCM commands the solenoid to regulate hydraulic pressure, but the circuit feedback or pressure response indicates it remains continuously engaged, which can cause harsh shifts or reduced transmission performance.

DTC codes / P27xx · Transmission / P27DA

P27DAPressure Control Solenoid T Stuck On

P27DA indicates that the transmission control module (TCM) has detected a fault where pressure control solenoid T is stuck in the energized or 'on' state. The TCM commands the solenoid to regulate hydraulic pressure, but the circuit feedback or pressure response indicates it remains continuously engaged, which can cause harsh shifts or reduced transmission performance.

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.