P349A

Cylinder 3 Deactivation/Intake Valve Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine idling
Increased fuel consumption
Power Loss
Engine vibration
Check Engine light comes on

Causes

Cylinder cut-off solenoid malfunction
Problems with hydraulic compensators
Open or short circuit in control circuit
Mechanical damage to the intake valve
Engine control unit malfunction

How to Fix

Check the condition of the cylinder cut-off solenoid
Diagnose the control circuit for opens and short circuits
Check the mechanical condition of valves and hydraulic compensators
Scan the engine control unit for errors
If necessary, replace faulty components

Related codes

P3497 P349B P349C