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C12D5 on the 2021 Audi A7 e

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 C12D5
TSB_2076396_32026-10-05. Service bulletin. This bulletin provides information regarding driver assist systems; Audi adaptive light, Audi pre sense system fault, adaptive cruise assist inop (DTC C12D5FA).
TSB_2076396_22025-11-08. Service bulletin. This bulletin provides information regarding Audi pre sense system fault, adaptive cruise assist inop (DTC C12D5FA).
A9024552076396_12025-01-07. Service bulletin. This bulletin provides information there Driver assist systems: Audi adaptive light, Audi pre sense system fault, adaptive cruise assist inop (DTC C12D5FA)
A9024902073986_12024-06-25. Service bulletin. This bulletin provides information pertinaing to multiple DAS warning messages (DTC C12D5FA, C12B3FB, B200FF3, B200FF9) in the driver assist systems.
A9024902073986_12024-06-25. Service bulletin. This bulletin provides information pertinaing to multiple DAS warning messages (DTC C12D5FA, C12B3FB, B200FF3, B200FF9) in the driver assist systems.
A9023492071958_12023-11-06. Service bulletin. This bulletin provides information for when the DTC C12D5FA is stored; Audi adaptive light, Audi pre sense fault, and Audi cruise assist inoperable.
A9023292069244_22023-07-10. Service bulletin. This bulletin provides information for when the intersection assist arrows flicker for a short period after the vehicle has started, or various other driver assist warnings; DTCs C12D5FA, B200FF9, and/or B107A16 may be stored.
A9022552060332_62022-04-05. Service bulletin. This bulletin contains instructions for creating a PSS record when DTC C12D5FA is stored and the driver assist systems are inoperable and a warning message is displayed.

8 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.