What this code means

Malfunction in the electronically controlled AWD coupling that distributes torque between axles.

Symptoms

• AWD warning light
• Reduced traction in AWD mode
• Vehicle operates in 2WD only
• Burning smell from coupling area

Common causes

• Electromagnetic coupling failure
• Coupling overheated
• Wiring damage to coupling
• Control module driver failure

Diagnostic steps

1. Test coupling solenoid resistance
2. Command coupling engagement with scan tool
3. Check for overheating signs
4. Inspect wiring and connector
5. Monitor coupling temperature if sensor equipped

Repair notes

Replace AWD coupling unit. Check fluid level in coupling if applicable.

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