What does code P27D0 mean?

Q: What does code P27D0 mean?

Pressure Control Solenoid R Control Circuit High. P27D0 indicates that the transmission control module (TCM) has detected an abnormally high voltage on the control circuit for pressure control solenoid R, which is one of several solenoids that regulate hydraulic pressure inside the automatic transmission. The TCM expects the circuit voltage to stay within a calibrated range, and a high reading typically points to an open circuit, a short to voltage, or a faulty solenoid.

DTC codes / P27xx · Transmission / P27D0

P27D0Pressure Control Solenoid R Control Circuit High

P27D0 indicates that the transmission control module (TCM) has detected an abnormally high voltage on the control circuit for pressure control solenoid R, which is one of several solenoids that regulate hydraulic pressure inside the automatic transmission. The TCM expects the circuit voltage to stay within a calibrated range, and a high reading typically points to an open circuit, a short to voltage, or a faulty solenoid.

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.