OBD-II code · Powertrain (generic, extended)
P2BBF Turbocharger/Supercharger Bypass Valve A Supply Voltage Low
The turbocharger/supercharger bypass valve A reports a supply voltage low condition. Boost recirculation cannot be commanded reliably.
Is it safe to drive with P2BBF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySupply fuse blown
- PossibleSupply wire shorted to ground
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
- P2C2ETurbocharger/Supercharger Bypass Valve B Supply Voltage Low
- P2BBCTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit Low
- P2BBDTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit High
- P2BBETurbocharger/Supercharger Bypass Valve A Position Exceeded Learning Limit
- P2BC0Turbocharger/Supercharger Bypass Valve A Driver Current/Temperature Too High
- P2BC1Charge Air Cooler Coolant Pump A Stuck/Stalled
- P2BC2Charge Air Cooler Coolant Pump A Supply Voltage Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.