C0394

Rear Axle Coupling Solenoid Temperature Sensor Circuit Short to Ground or Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Incorrect operation of the all-wheel drive system
The check engine or all-wheel drive light comes on
Poor handling on slippery surfaces
Rear axle clutch overheating

Causes

Broken wire in the temperature sensor circuit
Short circuit to ground
Malfunction of the temperature sensor itself
Connector problems or contact corrosion
Rear axle clutch solenoid malfunction

How to Fix

Check the integrity of the wiring and connectors of the temperature sensor circuit
Check the resistance of the temperature sensor (compare with nominal values)
Check for short circuit to ground
If necessary, replace the temperature sensor
Check system operation after troubleshooting
Reset the error using an OBD-II scanner

Related codes

C0393 C0395 C0396