Audi A5 (8T) Brake Electronics (Bosch 8.0)
Coding a Bosch 8.0 Control Module from scratch is normally done via Software Version Management (SVM). If the old Control Module is still accessible read/copy it's Coding to the new Module. If that is not possible we may be able to help Registered VCDS users. Registered users encountering difficulty can join and post the inquiry in our forum -or- contact us directly via email with the complete Auto-Scan.
Note: A Security Access Code is required prior to Coding. The code will appear in a pop-up balloon when connected to the 03-ABS Brake control module under the [Security Access-16] function.
Sensor for Steering Angle (G85)
The Steering Angle Sensor (G85) Calibration is performed in address  - Steering Wheel Electronics.
When 01794 is stored after coding the replacement module to the original value it may be necessary to re-code it to the same value again per the instructions on that DTC page.