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.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Wastegate position sensor a
- Wastegate actuator
- Ecm
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Sensor mechanically offset from actuator
- Linkage between sensor and wastegate worn
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.