2020 Audi A4 B6 pinouts
The connector/pinout information may be applied to the Audi (show all pinouts) model A4 B6
Audi OBD-II diagnostic interface pinout for Audi A4 B6 produced after 2001 suitable for most Audi models after 1996 (i.e. Audi A3, A4, TT)