Powertrain
Definition only
Lights the check engine lamp
P2BBD: Turbocharger/Supercharger Bypass Valve A Position Sensor Circuit High
Standardized SAE J2012 code · P2Bxx codes
What does P2BBD mean?
The turbocharger/supercharger bypass valve A reports a position sensor circuit high condition. Boost recirculation cannot be commanded reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Common causes
- High Signal wire shorted to B+
- Medium Open position sensor
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2BBD on the same make and model first.
P2BBD in the community
Ask about P2BBDNo one has posted about P2BBD yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your P2BBD problem