What does code P27D4 mean?

Q: What does code P27D4 mean?

Pressure Control Solenoid S Intermittent. P27D4 indicates that the transmission control module (TCM) has detected an intermittent fault in the electrical circuit for pressure control solenoid S, which is used to regulate hydraulic pressure inside the automatic transmission. The TCM monitors the solenoid's current draw and response time, and it sets this code when the signal momentarily falls outside the expected range without being continuously absent.

DTC codes / P27xx · Transmission / P27D4

P27D4Pressure Control Solenoid S Intermittent

P27D4 indicates that the transmission control module (TCM) has detected an intermittent fault in the electrical circuit for pressure control solenoid S, which is used to regulate hydraulic pressure inside the automatic transmission. The TCM monitors the solenoid's current draw and response time, and it sets this code when the signal momentarily falls outside the expected range without being continuously absent.

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.