C0408

Rear Axle Coupling Solenoid Valve

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect all-wheel drive operation
All-wheel drive warning light comes on
Reduced controllability on slippery surfaces
System transition to emergency mode

Causes

Open or short circuit in wiring harness
Solenoid valve malfunction
Problems with the hydraulic clutch system
Valve dirty or stuck
Malfunction of the four-wheel drive control unit

How to Fix

Check solenoid resistance
Inspect the wiring harness for damage
Check the pressure in the hydraulic system
Clean or replace solenoid valve
Test the all-wheel drive control unit

Related codes

C0409 C0410 C0411