P3491

Cylinder 12 Deactivation/Intake Valve Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Loss of engine power
Uneven engine operation
Increased fuel consumption
Check Engine Light Is On
Possible misfire in cylinder 12

Causes

Open or short circuit in control circuit
Malfunction of the solenoid valve of cylinder 12
Wiring Harness Problems
Engine control unit malfunction
Poor contact in connectors

How to Fix

Check the integrity of the control circuit
Check the resistance of the solenoid valve
Inspect the wiring harness for damage
Check connections and connectors
If necessary, replace the solenoid valve

Related codes

P3490 P3492 P3493