P003C

Symptoms

• Reduced engine power
• Increased fuel consumption
• Unstable idling
• Check engine light comes on
• Possible problems with starting

Causes

• VVT mechanism jammed
• VVT solenoid valve malfunction
• Low or poor quality engine oil
• Contamination of oil channels of the VVT system
• Problems with wiring harness or contacts
• Engine control unit malfunction

How to Fix

1. Check the level and condition of the engine oil
2. Diagnose the operation of the VVT solenoid valve
3. Check the electrical control circuit of the VVT mechanism
4. Clean or replace VVT solenoid valve
5. If necessary, replace the VVT mechanism
6. Reset the error and check the system operation

Related codes

Error P003C by Vehicle Brand