P3459

Cylinder 8 Deactivation/Intake Valve Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Increased vibration
Reduced engine power
Increased fuel consumption
Check Engine Light Is On

Causes

Malfunction of the cylinder deactivation solenoid valve
Open or short circuit in wiring harness
Poor contact in connectors
Malfunction of the engine control unit (ECU)
Mechanical problems with the cylinder deactivation mechanism

How to Fix

Check the condition of the wiring harness and connectors
Test the cylinder deactivation solenoid valve
Check resistance and continuity
Scan the ECU for additional errors
If necessary, replace faulty components

Related codes

P3460 P3458 P3457