What does code P27AC mean?

Q: What does code P27AC mean?

Pressure Control Solenoid F Data Incompatible. P27AC means the transmission control module (TCM) has received data from pressure control solenoid F that falls outside the range the module considers plausible for the current operating conditions. The TCM compares the solenoid's commanded current or hydraulic response against expected values and flags the circuit as incompatible when the feedback does not match its internal model.

DTC codes / P27xx · Transmission / P27AC

P27ACPressure Control Solenoid F Data Incompatible

P27AC means the transmission control module (TCM) has received data from pressure control solenoid F that falls outside the range the module considers plausible for the current operating conditions. The TCM compares the solenoid's commanded current or hydraulic response against expected values and flags the circuit as incompatible when the feedback does not match its internal model.

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.