# U1642 on the 2019 Audi S4

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.

## Bulletins for this model year that name U1642

- [10231579](https://open.wenmarpro.com/bulletins/10231579), 2023-03-06: This bulletin provides information for when an SOS malfunction is displayed in the instrument cluster; DTCs U142100, U164200, and/or U122C00.
- [10226968](https://open.wenmarpro.com/bulletins/10226968), 2022-12-06: This bulletin states that an SOS malfunction accompanied by DTCs U142100, U164200, and/or U122C100 my be stored erroneously and the ETCs should be cleared.
- [10222110](https://open.wenmarpro.com/bulletins/10222110), 2022-10-05: This bulletin states that an SOS malfunction accompanied by DTCs U142100, U164200, and/or U122C100 my be stored erroneously and the ETCs should be cleared.
- [10191043](https://open.wenmarpro.com/bulletins/10191043), 2021-05-06: This bulletin contains instructions for when DTC U142100, U164200, and/or U122C00 are stored in the Gateway module with an SOS malfunction message in the instrument cluster.