U0150low severityNetwork
Lost Communication with Audio Amplifier Module
on 2000 Audi A4 2.8L V6 · AWD
What this code means
Cannot communicate with the audio system amplifier module.
Symptoms
- No sound from speakers
- Audio system not responding
- Radio display works but no output
- Infotainment audio features limited
Common causes
- Amplifier module failure
- CAN bus or MOST bus wiring
- Module power loss
- Fuse blown
- Fiber optic cable damage
Diagnostic steps
- Check amplifier fuse
- Test power and ground
- Check data bus wiring
- Inspect fiber optic connections if applicable
- Test amplifier with direct input
Repair notes
Check fuses. On vehicles with MOST bus (BMW, Mercedes), check fiber optic connections.
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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