trigger wire for the relay is bad or a bad connection. Not even sure the if the ECU directly controls the fuel pump relay on the B5s. Maybe just jump the trigger wire for the relay off the ignition (just be careful). Also, try to find out what the "fault code" was. Maybe someone in your area has a VAG scan tool?
Good luck & keep us posted!
Theraudi1
NJ
Control arms in the snow (before a garage)

Current Rides:
'08 VW Rabbit S
'07 Volvo S60 R
'98 A8 4.2 Quattro
'87 Scirocco 8V FOR SALE!!! http://forums.vwvortex.com/zerothread?id=4155186
Past RIPS:
'04 Passat V6 4-motion
'90 V8 Quattro
'88 5000