What does code P27D7 mean?

Q: What does code P27D7 mean?

Pressure Control Solenoid S Control Circuit Low. P27D7 means the transmission control module (TCM) has detected an abnormally low current or voltage on the control circuit for pressure control solenoid S, which is one of the electro-hydraulic valves that regulates hydraulic pressure inside the automatic transmission. The TCM commands a specific current to the solenoid and monitors the resulting circuit feedback; when the feedback stays below the expected threshold, it flags the circuit as low and stores this code.

DTC codes / P27xx · Transmission / P27D7

P27D7Pressure Control Solenoid S Control Circuit Low

P27D7 means the transmission control module (TCM) has detected an abnormally low current or voltage on the control circuit for pressure control solenoid S, which is one of the electro-hydraulic valves that regulates hydraulic pressure inside the automatic transmission. The TCM commands a specific current to the solenoid and monitors the resulting circuit feedback; when the feedback stays below the expected threshold, it flags the circuit as low and stores this code.

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.