U0114moderate severityNetwork
Lost Communication with 4WD Clutch Control Module
on 2008 Audi R8 4.2L V8 · AWD
What this code means
Cannot communicate with the four-wheel drive clutch engagement module.
Symptoms
- 4WD warning light on
- AWD system inoperative
- Cannot engage 4WD
- Drivetrain vibration
Common causes
- 4WD clutch module failure
- CAN bus wiring
- Fuse blown
- Module connector corrosion
- Module water damage
Diagnostic steps
- Check 4WD module fuse
- Test power and ground
- Check CAN wiring
- Inspect module for water damage
- Try direct communication
Repair notes
Check fuses and inspect for water damage. Module often located under vehicle.
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00003
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01312
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01314
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01315
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01316
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01317
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01318
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01321
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U0001
High Speed CAN Communication Bus