U0167high severityNetwork
Lost Communication with Immobilizer Control Module
on 2001 Audi A6 3.0L V6 · AWD
What this code means
Cannot communicate with the vehicle immobilizer/theft deterrent module.
Symptoms
- Vehicle will not start
- Security light flashing
- Key not recognized
- Immobilizer warning on
Common causes
- Immobilizer module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Key transponder issue
- Antenna ring failure
Diagnostic steps
- Check immobilizer module fuse
- Test power and ground
- Check CAN wiring
- Test key transponder signal
- Inspect antenna ring around ignition
- Check for correct key programming
Repair notes
Security system. Check key transponder and antenna ring. May need key relearning procedure.
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Other Network codes on this vehicle
00003
Control Module - Defective
01304
Radio - No Communication
01312
Powertrain Data Bus - Defective
01314
Engine Control Module (ECM) - no communications
01315
Transmission Control Module (TCM) - No Communication
01316
ABS Control Module - No Communication
01317
Instrument Cluster Control Module (J285) - No Communication
01318
Immobilizer Control Module - No Communication
01321
Airbag Control Module - No Communication
U0001
High Speed CAN Communication Bus