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
37Original wording in English
FORD
Reported code forms U0284
Some 2024-2025 Ranger vehicles may exhibit a "Check Charging System" message displayed in the instrument panel cluster (IPC) with diagnostic trouble codes (DTC) U012D, U0284, and/or U042E stored in the powertrain…
HYUNDAI
Reported code forms U028400
This bulletin provides information on replacement of the Active Air Flap (AAF) actuator on 2022MY Ioniq 5 (NE1) vehicles that may exhibit AAF warning signs and DTC U028400 while driving. The AAF may not open or close…
AUDI
Reported code forms U028400
This bulletin provides repair guidance with DTCs U150600, U028400, and U020800 are present.
AUDI
Reported code forms U028400
This bulletin provides repair guidance with DTCs U150600, U028400, and U020800 are present.
AUDI
Reported code forms U028400
This bulletin provides repair guidance with DTCs U150600, U028400, and U020800 are present.
FORD
Reported code forms U0284
Some 2022 Maverick vehicles built on or before 4-Apr-2022 equipped with 2.0L engine may exhibit a charging system warning indicator with diagnostic trouble codes (DTCs) U012D, U0284 and/or U042E stored in the powertrain…
Check vehicle applicability
109A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | Q7 | 2024 |
| Audi | Q7 | 2023 |
| Audi | Q7 | 2022 |
| Audi | Q7 | 2021 |
| Audi | Q7 | 2020 |
| Audi | Q7 | 2019 |
| Audi | Q7 | 2018 |
| Audi | Q7 | 2017 |
| Audi | Q8 | 2023 |
| Audi | Q8 | 2022 |
| Audi | Q8 | 2021 |
| Audi | Q8 | 2020 |
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.