P2BC0
Turbocharger/Supercharger Bypass Valve A Driver Current/Temperature Too High
The turbocharger/supercharger bypass valve A reports a driver current/temperature too high condition. Boost recirculation cannot be commanded reliably.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Common causes
Ordered by how often each turns out to be the cause.
- Bypass valve actuator jammedCommon
- Control wire shorted to groundPossible
Parts involved
- Turbo Bypass Valve A
- Wiring Harness
- ECM
P2BC0 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.