P3451

Cylinder 7 Deactivation/Intake Valve Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Increased fuel consumption
Rough engine operation
Reduced engine power
Check Engine Light Illuminates
Disabling the cylinder deactivation system

Causes

Open or short circuit in wiring harness
Malfunction of the cylinder deactivation solenoid valve
Control circuit connector problems
Engine control unit (ECU) malfunction
Mechanical problems with the cylinder deactivation mechanism

How to Fix

Check the integrity of the wiring harness and connectors
Check the resistance of the cylinder deactivation solenoid valve
Check control circuit voltage
If necessary, replace the solenoid valve
If the problem persists, check the engine control unit

Related codes

P3450 P3452 P3453