http://www.myturbodiesel.com/1000q/a...-tdi-65535.htm Have you looked at this FAQ article? It's the first on in the mk3 section because every mk3 will have this problem. It normally throws another code but perhaps if you trace that vac line and double check all lines, you may find a bad one or bad check valve.
Also what does this mean? " have fuel up to pump without resistance"