What does code P271B mean?

Q: What does code P271B mean?

Park Pawl Position Sensor A Circuit High. P271B indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the signal circuit for the park pawl position sensor, which is the component that confirms the transmission's parking pawl is fully engaged. The PCM expects a voltage within a specific range when the pawl is engaged or disengaged, and a reading above the upper threshold triggers this code.

DTC codes / P27xx · Transmission / P271B

P271BPark Pawl Position Sensor A Circuit High

P271B indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the signal circuit for the park pawl position sensor, which is the component that confirms the transmission's parking pawl is fully engaged. The PCM expects a voltage within a specific range when the pawl is engaged or disengaged, and a reading above the upper threshold triggers this code.

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.