Exhaust Pressure Control Valve A Supply Low
The supply voltage to the exhaust pressure control valve A actuator is below the expected window. Fuse blown, supply wire shorted, or upstream regulator fault.
Affected components
- Exhaust pressure control valve a
- Wiring harness
Common causes
- High likelihood: Supply fuse blown
- Medium likelihood: Supply wire shorted to ground
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
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.