Turbocharger/Supercharger Wastegate Actuator B Driver Current/Temperature Too High
The output driver for the wastegate actuator B reports current or junction temperature above its protection threshold. Stalled actuator or short to ground.
Affected components
- Wastegate actuator b
- Ecm
Common causes
- High likelihood: Wastegate actuator mechanically jammed
- Medium likelihood: Control wire shorted to ground
Possible symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.