What does code P27D1 mean?

Q: What does code P27D1 mean?

Pressure Control Solenoid S Performance/Stuck Off. P27D1 indicates that the transmission control module (TCM) has detected a performance fault or stuck-off condition in a pressure control solenoid, which is responsible for regulating hydraulic pressure inside the transmission. The computer compares commanded solenoid current or duty cycle against actual pressure sensor feedback and flags the code when the solenoid fails to respond as expected or remains in a de-energized state.

DTC codes / P27xx · Transmission / P27D1

P27D1Pressure Control Solenoid S Performance/Stuck Off

P27D1 indicates that the transmission control module (TCM) has detected a performance fault or stuck-off condition in a pressure control solenoid, which is responsible for regulating hydraulic pressure inside the transmission. The computer compares commanded solenoid current or duty cycle against actual pressure sensor feedback and flags the code when the solenoid fails to respond as expected or remains in a de-energized state.

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.