A Camshaft Profile Actuator A Control Circuit High Bank 1
Excessively high control voltage at the cam profile actuator (intake, profile A, bank 1). Typically a short to power or open ground.
Affected components
- Cam profile actuator
- Actuator wiring
Common causes
- High likelihood: Wiring shorted to battery voltage
- Medium likelihood: Open ground return path
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
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.