P3434

Cylinder 5 Deactivation/Intake Valve Control Circuit Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Reduced engine power
Check Engine light comes on
Vibrations at idle

Causes

Malfunction of the cylinder deactivation solenoid valve
Open or short circuit in control circuit
Poor contact in connectors
Engine control unit malfunction
Mechanical problems in the deactivation mechanism

How to Fix

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

Related codes

P3431 P3432 P3433