What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
U0186-31Lost Communication With Audio Amplifier - No SignalU0186:08Communication error with audio amplifier This may be caused by poor electrical connection at connector 0920-114 and/or 0920-115D (Rear Harness Side)Manufacturer communications
17Original wording in English
MAZDA
Reported code forms U0186:08
Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA…
MAZDA
Reported code forms U0186:08
Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA…
MAZDA
Reported code forms U0186:08
Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA…
MAZDA
Reported code forms U0186:08
Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA…
MAZDA
Reported code forms U0186:08
Some customers may expierience infotainment static or no audio sound and the following DTC's may be stored: - U2145:08 - Communication error with remote tuner (RT) - U0186:08 - Communication error with audio amplifier…
CADILLAC, CHEVROLET, GMC
Reported code forms U0186
This Preliminary information communicates a customer concern of IPC gauges inoperative or fluctuate, No Start, No Crank, SIR Light / Service Airbag Message, Service Suspension Message, Radio display blank, Steering…
Check vehicle applicability
58A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Historical vehicle association; OBD-II compatibility is not established by this record.
| Make | Model | Model year |
|---|---|---|
| Alfa Romeo | 4C SPIDER | 2017 |
| Cadillac | ESCALADE | 2020 |
| Cadillac | ESCALADE | 2019 |
| Cadillac | ESCALADE | 2018 |
| Cadillac | ESCALADE | 2017 |
| Chevrolet | IMPALA | 2014 |
| Chevrolet | SILVERADO | 2017 |
| Chevrolet | SILVERADO 1500 | 2019 |
| Chevrolet | SILVERADO 1500 | 2018 |
| Chevrolet | SILVERADO 1500 | 2017 |
| Chevrolet | SILVERADO 2500 | 2019 |
| Chevrolet | SILVERADO 2500 | 2018 |
Historical records · 1 · Historical vehicle association; OBD-II compatibility is not established by this record.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.