Powertrain
generic / SAE
P00C5
Turbocharger/Supercharger B Turbine Overspeed
Turbocharger B turbine speed exceeded its safe limit. Same as P0049 on turbo B. 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
GroupP0
Range / number– / C5
Possible causes
- Wastegate B stuck closed high
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: hard
- DIY: shop recommended
- Estimated cost: 300–3000 €
- Estimated time: 2–10 h
- Component: turbocharger b
- Component: wastegate b
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012