P2ABA
Wastegate Position Sensor B Circuit
The ECM detects a generic fault on the wastegate position sensor B circuit. Boost actuator position cannot be verified reliably.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Position sensor failedCommon
- Wiring or connector faultPossible
Parts involved
- Wastegate Position Sensor B
- Wiring Harness
- ECM
P2ABA 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.