P349E

Cylinder 7 Deactivation/Intake Valve Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Power reduction
Increased fuel consumption
Check Engine Light Illuminates
Rattling sound from the engine

Causes

Malfunction of the solenoid valve of the cylinder deactivation system
Mechanical problem with cylinder 7 intake valve
Open or short circuit in control circuit
Problems with the engine control unit
Low oil level or incorrect oil used

How to Fix

Check the level and condition of the engine oil
Diagnose the solenoid valve control circuit
Check the functionality of the cylinder deactivation solenoid valve
Carry out a mechanical check of the intake valve of cylinder 7
If necessary, replace faulty components

Related codes

P349F P3487 P3490