OBD-II code · Powertrain (generic, extended)
P2C2E Turbocharger/Supercharger Bypass Valve B Supply Voltage Low
The turbocharger/supercharger bypass valve B reports a supply voltage low condition. Boost recirculation cannot be commanded reliably on this branch.
Is it safe to drive with P2C2E?
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 B, Wiring Harness, Ecm
Related codes
- P2BBFTurbocharger/Supercharger Bypass Valve A Supply Voltage Low
- P2C2BTurbocharger/Supercharger Bypass Valve B Position Sensor Circuit Low
- P2C2CTurbocharger/Supercharger Bypass Valve B Position Sensor Circuit High
- P2C2DTurbocharger/Supercharger Bypass Valve B Position Exceeded Learning Limit
- P2C2FTurbocharger/Supercharger Bypass Valve B Driver Current/Temperature Too High
- P2C30Ignition Coil Primary Circuit Fuse A
- P2C31Ignition Coil Primary Circuit Fuse B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.