P3406

Symptoms

• Unstable engine idling
• Reduced engine power
• Increased fuel consumption
• Check Engine Light Illuminates
• Possible misfire in cylinder 1

Causes

• Cylinder 1 VVT solenoid valve malfunction
• Open or short circuit in control circuit
• Poor contact in control circuit connectors
• Mechanical failure of the VVT mechanism
• Problems with the engine control unit

How to Fix

1. Check the condition of the VVT solenoid valve
2. Check the integrity of the control circuit and connectors
3. Check the resistance and functionality of the valve
4. Check the mechanical part of the VVT system
5. If necessary, replace faulty components

Related codes

Error P3406 by Vehicle Brand