OBD-II code · Powertrain (generic, extended)
P2BBD Turbocharger/Supercharger Bypass Valve A Position Sensor Circuit High
The turbocharger/supercharger bypass valve A reports a position sensor circuit high condition. Boost recirculation cannot be commanded reliably.
Is it safe to drive with P2BBD?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen position sensor
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Likely to fail
- Parts involved
- Turbo Bypass Valve A, Wiring Harness, Ecm
Related codes
- P2C2CTurbocharger/Supercharger Bypass Valve B Position Sensor Circuit High
- P2BBAEngine Coolant Temperature Sensor 6 Circuit Intermittent/Erratic
- P2BBBTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit
- P2BBCTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit Low
- P2BBETurbocharger/Supercharger Bypass Valve A Position Exceeded Learning Limit
- P2BBFTurbocharger/Supercharger Bypass Valve A Supply Voltage Low
- P2BC0Turbocharger/Supercharger Bypass Valve A Driver Current/Temperature Too High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.