C0393

Rear Axle Coupling Solenoid Control Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Incorrect all-wheel drive operation
Illuminated fault indicator on the dashboard
Possible vibrations or noises when driving
Unexpected rear axle disconnection

Causes

Open or short circuit in the solenoid control circuit
Rear axle clutch solenoid malfunction
Problems with the control unit
Oxidized or damaged contacts
Wiring Harness Problems

How to Fix

Carry out diagnostics using an OBD-II scanner
Check the integrity of the wiring harness
Measure the solenoid resistance
Check contacts and connectors for oxidation and damage
Replace solenoid or wiring harness if necessary
Check and reflash the control unit if necessary

Related codes

C0394 C0395 P1860