A Rocker Arm Actuator System Stuck On Bank 1
On variable valve lift systems (e.g. Honda VTEC) the ECU detects that the bank 1 rocker arm actuator is stuck in the engaged (high lift) position. Idle quality and fuel economy are affected.
Affected components
- Vvl actuator
- Rocker arm
- Oil passages
Common causes
- High likelihood: Insufficient oil pressure / level
- Medium likelihood: Stuck VVL solenoid
- Low likelihood: Carbon or debris buildup preventing free movement
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.