OBD-II code · Powertrain (generic, extended)
P22CB Turbocharger Compressor Outlet Switching Valve Control Circuit Low
Compressor outlet switching valve drive line stuck low — short to ground. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Is it safe to drive with P22CB?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyShort to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Boost Switching Valve
Related codes
- P22CATurbocharger Compressor Outlet Switching Valve Control Circuit/Open
- P22C8Turbocharger Compressor Outlet Valve Stuck Open
- P22C9Turbocharger Compressor Outlet Valve Stuck Closed
- P22CCTurbocharger Compressor Outlet Switching Valve Control Circuit High
- P22CDTurbocharger Compressor Outlet Switching Valve Stuck Open
- P22CETurbocharger Compressor Outlet Switching Valve Stuck Closed
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.