Controller: 4D0 820 043
Component: D2-KLIMAVOLLAUTOMAT_D02
Coding: 00080
Shop #: WSC 23146
5 Faults Found:
00757 - Right Vent Temp Sensor (G151)
30-00 - Open or Short to B+
00734 - Potentiometer in Central Vent (G142)
30-10 - Open or Short to B+ - Intermittent
00796 - Fan for Interior Temp Sensor (V42)
41-10 - Blocked or No Voltage - Intermittent
01270 - A/C Magnetic Clutch (N25)
36-10 - Open Circuit - Intermittent
01273 - Fresh Air Blower (V2)
17-10 - Control Difference - Intermittent

Location for those things would help a lot. Any experience for these codes ?

email me if you need more detail

fresh air blower/controller
Good luck looks complicated but once you get in there it will probably make sense-look for vany burnt or cracked solder joints etc.