Powertrain
generic / SAE
P22CE
Turbocharger Compressor Outlet Switching Valve Stuck Closed
Compressor outlet switching valve mechanically stuck closed — boost path locked. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / CE
Possible causes
- Valve stuck closed high
- Carbon or debris buildup preventing free movement low
- Component wear with age - mechanical play low
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.7–3 h
- Component: boost switching valve
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012