Powertrain
Definition only
Lights the check engine lamp
P2ABA: Wastegate Position Sensor B Circuit
Standardized SAE J2012 code · P2Axx codes
What does P2ABA mean?
The ECM detects a generic fault on the wastegate position sensor B circuit. Boost actuator position cannot be verified reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Position sensor failed
- Medium Wiring or connector fault
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2ABA on the same make and model first.
P2ABA in the community
Ask about P2ABANo one has posted about P2ABA yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your P2ABA problem