C1040 on the 2017 Audi A6
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.
| A4320412059843_1 | 2020-07-07. Service bulletin. This bulletin contains a software update for an adaptive suspension warning with DTCs C104011, C104111, C104211, and C104311. |
|---|
1 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.