P3426

Cylinder 4 Deactivation/Intake Valve Control Circuit Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Uneven engine operation
Check Engine Light Is On
Vibrations at idle

Causes

Malfunction of the cylinder deactivation solenoid valve
Open or short circuit in control circuit
Problems with the engine control unit (ECU)
Mechanical damage to the intake valve
Poor contact in control circuit connectors

How to Fix

Check the condition of the cylinder deactivation solenoid valve
Check the integrity of the control circuit and connectors
Scan the engine control unit for errors
Check the mechanical condition of the intake valve of cylinder 4
If necessary, replace faulty components

Related codes

P3425 P3427 P3400