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 communications
26Original wording in English
AUDI
Reported code forms U046900
This bulletin provides information when there is an electrical system warning; DTC U046900 stored in the ECM.
AUDI
Reported code forms U046900
This TSB provides info when there is a 48V vehicle electrical system warning, DTC U046900 stored in the ECM.
AUDI
Reported code forms U046900
This bulletin provides information when there is an MHEV Electrical System Fault with DTC U046900 / 34763; U002900/U002800.
AUDI
Reported code forms U046900
This TSB provides info when there is a 48V vehicle electrical system warning, DTC U046900 stored in the ECM.
AUDI
Reported code forms U046900
This TSB provides info when there is a 48V vehicle electrical system warning, DTC U046900 stored in the ECM.
AUDI
Reported code forms U046900
This bulletin provides information when there is an MHEV Electrical System Fault with DTC U046900 / 34763; U002900/U002800.
Check vehicle applicability
174A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | A3 | 2024 |
| Audi | A3 | 2023 |
| Audi | A3 | 2022 |
| Audi | A4 | 2023 |
| Audi | A4 ALLROAD | 2023 |
| Audi | A5 | 2023 |
| Audi | A5 | 2022 |
| Audi | A5 | 2021 |
| Audi | A6 | 2025 |
| Audi | A6 | 2024 |
| Audi | A6 | 2023 |
| Audi | A6 | 2022 |
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.