What does code P27C5 mean?

Q: What does code P27C5 mean?

Pressure Control Solenoid P Control Circuit/Open. P27C5 indicates that the transmission control module (TCM) has detected an open circuit or excessive resistance in the electrical path for pressure control solenoid 'P', which is one of the solenoids that regulates hydraulic pressure inside the automatic transmission. The computer commands a specific current to the solenoid and monitors the resulting voltage or current feedback, and when the expected electrical response is missing, it stores this code and typically illuminates the malfunction indicator lamp.

DTC codes / P27xx · Transmission / P27C5

P27C5Pressure Control Solenoid P Control Circuit/Open

P27C5 indicates that the transmission control module (TCM) has detected an open circuit or excessive resistance in the electrical path for pressure control solenoid 'P', which is one of the solenoids that regulates hydraulic pressure inside the automatic transmission. The computer commands a specific current to the solenoid and monitors the resulting voltage or current feedback, and when the expected electrical response is missing, it stores this code and typically illuminates the malfunction indicator lamp.

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.