OBD-II code · Powertrain (generic, extended)
P2B81 Wastegate Position Sensor A Circuit Performance
The wastegate position sensor A signal does not correlate with the commanded actuator position within tolerance. Sensor offset, mechanical wear, or signal integrity degraded.
Is it safe to drive with P2B81?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor mechanically offset from actuator
- PossibleLinkage between sensor and wastegate worn
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Wastegate Position Sensor A, Wastegate Actuator, Ecm
Related codes
- P2B82Wastegate Position Sensor B Circuit Performance
- P2B7EEVAP System Pressure Sensor/Switch C Circuit Intermittent
- P2B7FTurbocharger/Supercharger Boost Control Module A Calibration Not Learned/Programmed
- P2B80Turbocharger/Supercharger Boost Control Module B Calibration Not Learned/Programmed
- P2B83Charge Air Cooler Coolant Pump A Overspeed/Air In System
- P2B84Charge Air Cooler Coolant Pump A Underspeed
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.