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C12A3 on the 2024 Audi S8

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.

Bulletins for this model year that name C12A3
A4824662066318_62024-06-25. Service bulletin. This bulletin provides information when there is a rear steering; DTC B200FF0 or C12A329.
A4824662066318_62024-06-25. Service bulletin. This bulletin provides information when there is a rear steering; DTC B200FF0 or C12A329.
A4823562066318_52023-11-06. Service bulletin. This bulletin provides information when there is a rear wheel steering malfunction - DTCs B200FF0 pr C12A329.
A4823472066318_42023-07-10. Service bulletin. This bulletin provides information for when there is a rear wheel steering malfunction; DTC B200FF0 or C12A329.

4 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.