What does code P271A mean?

Q: What does code P271A mean?

Park Pawl Position Sensor A Circuit Low. P271A indicates that the transmission control module (TCM) has detected a low-voltage condition on the signal circuit for the park pawl position sensor, which is used to confirm whether the parking pawl is engaged or disengaged. The TCM compares the sensor's output to expected values and sets this code when the voltage remains below the normal threshold for a calibrated time, often indicating a short to ground or an open circuit.

DTC codes / P27xx · Transmission / P271A

P271APark Pawl Position Sensor A Circuit Low

P271A indicates that the transmission control module (TCM) has detected a low-voltage condition on the signal circuit for the park pawl position sensor, which is used to confirm whether the parking pawl is engaged or disengaged. The TCM compares the sensor's output to expected values and sets this code when the voltage remains below the normal threshold for a calibrated time, often indicating a short to ground or an open circuit.

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.