Codes cleared today and have re-run VagCom. Got the following results.
The one that appears twice is 18265 - Load Signal: Error Message from ECU P1857 - 35-00 - -
VAG-COM Version: Release 409.1-US
Chassis Type: 4B - Audi A6 C5
Scan: 01,02,03,08,15,16,17,35,36,37,45,55,56,76...