P3404

Symptoms

• Loss of engine power
• Increased fuel consumption
• Engine vibration at idle
• Check Engine Light Is On
• Unstable engine operation

Causes

• Intake valve control solenoid valve malfunction
• Open or short circuit in control circuit
• Poor contact in wiring connectors
• Engine control unit malfunction
• Mechanical problem with variable valve timing system

How to Fix

1. Check the condition of the intake valve control solenoid valve
2. Check the control circuit for open and short circuit
3. Inspect connectors and contacts for corrosion or damage
4. If necessary, replace the solenoid valve or wiring
5. Check the functionality of the engine control unit

Related codes

Error P3404 by Vehicle Brand