P3456

Cylinder 7 Exhaust Valve Control Circuit High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–89 (est.)

Symptoms

Loss of engine power
Increased fuel consumption
Unstable engine operation
Check Engine Light Is On
Problems starting the engine

Causes

Short circuit in control circuit
Solenoid valve malfunction
Wiring harness damage
Problems with the engine control unit
Contact corrosion

How to Fix

Check the integrity of the control circuit
Check the resistance of the solenoid valve
Inspect the wiring harness for damage
Check contacts for corrosion
If necessary, replace faulty components

Related codes

P3455 P3457 P3458