01304low severityNetwork
Radio - No Communication
on 2002 Audi A4 3.0L V6 · AWD
What this code means
The radio/infotainment unit is not communicating over the data bus. Similar to OBD U0155 family for lost communication.
Symptoms
- Radio does not turn on
- No audio output
- Display blank or frozen
Common causes
- Blown radio fuse
- Wiring or connector fault
- Faulty radio unit
- CAN bus wiring damage
Diagnostic steps
- Check radio fuse and power supply
- Verify CAN bus wiring to radio
- Scan for other bus faults
- Replace radio if unresponsive
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Other Network codes on this vehicle
00003
Control Module - Defective
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
U0002
High Speed CAN Communication Bus Performance