C12B3 on the 2020 Audi S3
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.
| A9623852059201_6 | 2023-05-05. Service bulletin. This bulletin contains information for when the message appears in the instrument cluster about the high beam assist and/or traffic sign detection with DTC C12B3FD. |
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| A9621632059201_4 | 2021-04-06. Service bulletin. This bulletin contains information for when the messages appear in the instrument cluster about the high beam assist and/or traffic sign detection with DTC C12B3FD. |
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.