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.
The wastegate position sensor A signal does not correlate with the commanded actuator position within tolerance. Sensor offset, mechanical wear, or signal integrity degraded.
Common causes
- high
Sensor mechanically offset from actuator
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-990
- medium
Linkage between sensor and wastegate worn
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-990
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P2B81 mean?
P2B81 means "Wastegate Position Sensor A Circuit Performance". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2B81?
sensor mechanically offset from actuator; linkage between sensor and wastegate worn — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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