OBD-II code · Powertrain (generic, extended)
P271B Park Pawl Position Sensor A Circuit High
The position sensor for park pawl A reads above the upper diagnostic threshold. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P271B?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyOpen sensor element
- PossibleSignal wire shorted to the 5 V reference
- 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
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.