C12B3 on the 2026 Audi RS 7
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.
| TSB_2054202_8 | 2026-10-05. Service bulletin. This bulletin provides information when there is an Audi adaptive light system malfunction; DTC C12B3FA is stored in the control module for driver assistance systems. |
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| TSB_2054202_7 | 2026-04-07. Service bulletin. This bulletin provides information when the Audi adaptive light system malfunctions; DTC C12B3FA is stored in the control module. |
| TSB_2059201_9 | 2025-11-08. Service bulletin. This bulletin provides information when high beam assist, or traffic sign detection limited, DTC C12B3FD may be stored in the DAS control module. |
| TSB_2054202_6 | 2025-11-08. Service bulletin. This bulletin provides informaton when there is an adaptive light system malfunction; DTC C12B3FA stored in the control module for driver assistance systems. |
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.