Data Bus On Board Diagnostic Interface -J533-

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 Audi S7, 2015 Audi RS 7, 2015 Audi A7 Quattro, 2014 Audi S7, and 2014 Audi RS 7. However, it is still accessible from the selected car via links, so may be relevant.

Data Bus On Board Diagnostic Interface interlinks the different CAN bus systems in the vehicle.
It transmits data, for example, from the engine control module (drivetrain CAN bus) to the instrument cluster (instrument cluster CAN Bus).
Fault Finding takes place in "Guided Fault Finding" using the Vehicle diagnostic tester.
Repairing CAN Bus lines, refer to REPAIRING CAN BUS WIRES .