OBD-II code · Powertrain (generic, extended)
P271A Park Pawl Position Sensor A Circuit Low
The position sensor that confirms the park pawl A engagement state reads below the lower diagnostic threshold. Without confirmed park engagement the shift-by-wire controller cannot release the brake hold.
Is it safe to drive with P271A?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyInternal short in sensor element
- PossibleSignal wire shorted to ground
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Park Pawl Position Sensor A, Wiring Harness
Related codes
- P271CPark Pawl Position Sensor B Circuit Low
- P2717Pressure Control Solenoid D Intermittent
- P2718Pressure Control Solenoid D Control Circuit / Open
- P2719Pressure Control Solenoid D Control Circuit Range/Performance
- P271BPark Pawl Position Sensor A Circuit High
- P271DPark Pawl Position Sensor B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.