What this code means

Malfunction in the sensor that reports the current transfer case range position.

Symptoms

• 4WD indicator not showing correct mode
• Service 4WD light
• Transfer case may not shift
• Unknown drive mode selected

Common causes

• Faulty position sensor
• Sensor wiring damage
• Transfer case not fully engaged in any position
• Sensor contaminated with fluid

Diagnostic steps

1. Read transfer case position with scan tool
2. Command mode change and watch sensor response
3. Inspect sensor wiring
4. Check transfer case fluid level and condition
5. Test sensor resistance or voltage

Repair notes

Replace transfer case position sensor. Check fluid condition.

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