What does code P271D mean?

Q: What does code P271D mean?

Park Pawl Position Sensor B Circuit High. P271D indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the signal circuit for the park pawl position sensor B, which is used to confirm whether the transmission's parking pawl is engaged. The PCM compares this signal against expected values and sets the code when the voltage exceeds the normal range, often indicating an open circuit, a short to voltage, or a faulty sensor.

DTC codes / P27xx · Transmission / P271D

P271DPark Pawl Position Sensor B Circuit High

P271D indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the signal circuit for the park pawl position sensor B, which is used to confirm whether the transmission's parking pawl is engaged. The PCM compares this signal against expected values and sets the code when the voltage exceeds the normal range, often indicating an open circuit, a short to voltage, or a faulty sensor.

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.