Cold Start Turbocharger/Supercharger Wastegate Actuator B Range/Performance
During cold start, the wastegate actuator B response does not match the cold-start calibration. Cold viscosity, ice formation, or actuator force degraded at low temperature.
Affected components
- Wastegate actuator b
- Ecm
Common causes
- High likelihood: Actuator response sluggish at cold
- Medium likelihood: Wastegate linkage iced
- Low likelihood: Sensor element aged beyond calibration window
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
- A drive cycle may be required after repair
- 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.