U1228 on the 2020 Audi A8
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| A5724712055932_10 | 2025-01-07. Service bulletin. This TSB provides information when there is central locking/parking brake warning, and alarm or exterior mirror issues; DTCs B122D29, B14FF29 or U122800 stored. |
|---|---|
| A5723062055932_9 | 2023-06-06. Service bulletin. This bulletin provides information for when the central locking/parking brake warning, or alarm sounds, or if there are exterior mirror issues. DTCs B122D29, U122800, and/or B14FF29 may be stored. |
| A5721782055932_8 | 2021-07-02. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800 or to follow the Campaign. |
| A5721732055932_7 | 2021-03-04. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800. |
| A5721722055932_6 | 2021-03-04. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800 and a potential part replacement. |
| A5720682055932_5 | 2020-07-07. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800 and a potential part replacement. |
| A5719622055932_4 | 2020-01-08. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800 and a potential part replacement. |
| A5719602055932_3 | 2019-11-07. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800 and a potential part replacement. |
| A5719592055932_2 | 2019-10-02. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800 and a potential part replacement. |
| A5719572055932_1 | 2019-09-09. Service bulletin. This bulletin contains a software update for DTC B122D29 or U122800 . |
10 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.