hi i have a problem with my a4

it al started when i wanted to start and instead of that i got a clicking noise from the fuel pump relay and she wouldnt start ..
friend of mine told me to swap the ignition switch ...
i did so and now the clicking went but she still wont start ... what happens now is if i turn the key i hear the fuel pump when i over turn it turns on and dies no throttle response...
if i try star it again i cant hear the fuel pump pulin gas and she wont star at all any more...

i get a epc light wotch dies out ...
and a ca rwith a key light(dont no wat that is ) whitch stays on .....
also a exclamation mark ....


when clicking was present from fuel pump relay dash light would stay on whether or not key in ignition


can some one help me

 

clicking of fuel pump relay has returned again please help