P00B0Turbocharger/Supercharger Boost Control B Module Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Boost control B here is an electronic actuator with its own electronics (a "smart" actuator), usually on the variable turbine geometry, with its own position sensor and controlled over a data bus or a pulsed signal. It checks itself and reports internal faults to the engine control module; documented examples are pattern errors, overcurrent and checksum errors. The control module cannot narrow down a fault inside the actuator further. B denotes the second, separate actuator. P00B0 is set when actuator B reports an internal fault. No manufacturer description naming this exact code was found; the explanation follows its documented counterpart.
- What you may notice
- Check engine light on
- Loss of power or limp mode with reduced boost
- Likely causes
- LikelyElectronics or motor inside the actuator faulty
- PossibleSector gear or vane mechanism sticking (soot, coking), causing overcurrent
- PossibleWeak supply or ground, corroded connector
- RareSoftware of actuator or control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €400 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.