P2B93
Wastegate Position Sensor A Exceeded Learning Limit
The required adaptation offset for the wastegate position sensor A exceeds the calibrated learning window. Sensor or mechanism out of nominal range.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Mechanical wear shifted end-stopsCommon
- Sensor reference driftedPossible
Parts involved
- Wastegate Position Sensor A
- Wastegate Actuator
- ECM
P2B93 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.