What does code P2738 mean?

Q: What does code P2738 mean?

Pressure Control Solenoid 'F' Control Circuit Low. P2738 indicates that the transmission control module (TCM) has detected an abnormally low voltage on the control circuit for pressure control solenoid 'F', which is used to regulate hydraulic pressure inside the automatic transmission. The TCM monitors the solenoid's electrical circuit and sets this code when the signal voltage falls below the expected range, which can prevent the solenoid from actuating properly and lead to harsh or erratic shifting.

DTC codes / P27xx · Transmission / P2738

P2738Pressure Control Solenoid 'F' Control Circuit Low

P2738 indicates that the transmission control module (TCM) has detected an abnormally low voltage on the control circuit for pressure control solenoid 'F', which is used to regulate hydraulic pressure inside the automatic transmission. The TCM monitors the solenoid's electrical circuit and sets this code when the signal voltage falls below the expected range, which can prevent the solenoid from actuating properly and lead to harsh or erratic shifting.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

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.