P3431

Cylinder 4 Exhaust Valve Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
Possible misfire in cylinder 4

Causes

Open or short circuit in control circuit
Control solenoid valve malfunction
Problems with the wiring harness or connectors
Engine control unit (ECU) malfunction
Mechanical problems with exhaust valve

How to Fix

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

Related codes

P3430 P3432 P3429