Turbocharger/Supercharger Boost Control A Circuit Low
Boost control circuit A voltage below expected range — short to ground or low-resistance fault in solenoid wiring.
Affected components
- Boost control solenoid
- Actuator wiring
Common causes
- High likelihood: Wiring shorted to ground
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Harness chafing through insulation
Possible symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
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.