P3420

Cylinder 3 Deactivation/Intake Valve Control Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Uneven engine operation
Power Loss
Increased fuel consumption
Check Engine Light Is On
Misfire in cylinder 3

Causes

VVT solenoid valve malfunction
Open or short circuit in wiring harness
Poor contact in connectors
Engine control unit malfunction
Mechanical problems of the timing system

How to Fix

Check the condition of the solenoid valve of cylinder 3
Check the integrity of the wiring harness and connectors
Measure the resistance of the control circuit
Check the operation of the control unit
If necessary, replace faulty components

Related codes

P3410 P3430 P3400