What does code P27AF mean?

Q: What does code P27AF mean?

Pressure Control Solenoid J Data Incompatible. P27AF indicates that the transmission control module (TCM) has received data from pressure control solenoid J that is outside the expected range or inconsistent with other sensor inputs. The TCM monitors solenoid current and hydraulic pressure feedback, and when the signal does not correlate with commanded pressure, it sets this code and may default to a limp-home mode.

DTC codes / P27xx · Transmission / P27AF

P27AFPressure Control Solenoid J Data Incompatible

P27AF indicates that the transmission control module (TCM) has received data from pressure control solenoid J that is outside the expected range or inconsistent with other sensor inputs. The TCM monitors solenoid current and hydraulic pressure feedback, and when the signal does not correlate with commanded pressure, it sets this code and may default to a limp-home mode.

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.