B126C on the 2021 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. Its meaning is in the manufacturer's service information.
| A912330206211511 | 2023-10-05. Service bulletin. This bulletin provides information on reinstalling the navigation database when DTC B126CF0 and/or B126CF1 is stored in the 005F. |
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| A912325206211510 | 2023-09-01. Service bulletin. This bulletin contains instructions to reinstall the navigation database in the presence of DTC B126CF1 stored in the 005F. |
| A9123612062115_9 | 2023-02-07. Service bulletin. This bulletin provides instructions for when a customer states that after an over-the-air navigation map update the navigation system is permanently initializing or the navigation map is incomplete or corrupt and DTC B126CF0 and/or B126CF1 may be stored in the electronics control module. |
3 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.