The hose inside the ECU must be changed: http://www.myturbodiesel.com/1000q/a...-tdi-65535.htm
The error code is confirmation it's the problem. Be glad you posted here because some people who don't know replace the ECU at a cost of $1300!
However, the ABS sensors should also be fixed.
The airbag code is common. These can sometimes come up for no reason. Clear the code and if it comes back try cleaning the contacts and checking the wiring. The airbag should still work unless it's a major fault.