C0604

Active Air Dam Control Circuit Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased fuel consumption
Unstable operation of the active air deflector
Check Engine Light Illuminates

Causes

Open or short circuit in wiring harness
Malfunction of the solenoid valve (solenoid)
Problems with the control unit
Mechanical damage to the deflector

How to Fix

Check the wiring harness for breaks and short circuits
Check the operation of the solenoid valve
Check the mechanical condition of the deflector
If necessary, replace faulty components

Related codes

C0601 C0602 C0603