What does code P271C mean?

Q: What does code P271C mean?

Park Pawl Position Sensor B Circuit Low. P271C indicates that the powertrain control module (PCM) has detected an abnormally low voltage signal from the park pawl position sensor B circuit, which is used to confirm whether the transmission's parking pawl is engaged. The PCM expects a voltage within a specific range when the pawl is in a known position, and a low reading suggests a short to ground, a faulty sensor, or a wiring problem.

DTC codes / P27xx · Transmission / P271C

P271CPark Pawl Position Sensor B Circuit Low

P271C indicates that the powertrain control module (PCM) has detected an abnormally low voltage signal from the park pawl position sensor B circuit, which is used to confirm whether the transmission's parking pawl is engaged. The PCM expects a voltage within a specific range when the pawl is in a known position, and a low reading suggests a short to ground, a faulty sensor, or a wiring problem.

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.