Exhaust Pressure Control Valve A Range/Performance
Exhaust pressure control valve A is electrically OK but does not move as commanded.
Affected components
- Exhaust pressure regulator
Common causes
- High likelihood: Carbon buildup restricts movement
- Low likelihood: Sensor element aged beyond calibration window
- Low likelihood: Sensor mounting loose - signal damping
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.