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B126C on the 2025 Audi RS 3

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 B126C
A9123302062115112023-10-05. Service bulletin. This bulletin provides information on reinstalling the navigation database when DTC B126CF0 and/or B126CF1 is stored in the 005F.
A9123252062115102023-09-01. Service bulletin. This bulletin contains instructions to reinstall the navigation database in the presence of DTC B126CF1 stored in the 005F.

2 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.