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.
B143C-12ANC Microphone 2-Circuit Short To BatteryB143C-12ANC Microphone 2-Circuit Short To BatteryManufacturer communications
14Original wording in English
JEEP
Reported code forms B143C-12
Flash: Amplifier (AMP) Diagnostic and System Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes…
RAM
Reported code forms B143C-12
Flash: Amplifier (AMP) Diagnostic and System Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes…
RAM
Reported code forms B143C-12
Flash: Amplifier (AMP) Diagnostic and System Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes…
JEEP
Reported code forms B143C-12
Flash: Amplifier (AMP) Diagnostic and System Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes…
PORSCHE
Reported code forms B143C29
Technical information for Intermittent Warning Message “Power Button Faulty - Service Required” in the Instrument Cluster / Fault Memory Entry “B143C29” in the Rear-End Electronics Control Unit
PORSCHE
Reported code forms B143C29
Technical information for Intermittent Warning Message “Power Button Faulty - Service Required” in the Instrument Cluster/Fault Memory Entry “B143C29” in the Rear-End Electronics Control Unit
Check vehicle applicability
329A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | A4 | 2025 |
| Audi | A4 | 2024 |
| Audi | A4 | 2023 |
| Audi | A4 | 2022 |
| Audi | A4 | 2021 |
| Audi | A4 | 2020 |
| Audi | A4 | 2019 |
| Audi | A4 | 2018 |
| Audi | A4 | 2017 |
| Audi | A4 ALLROAD | 2025 |
| Audi | A4 ALLROAD | 2024 |
| Audi | A4 ALLROAD | 2023 |
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.