Audi A4 2001 fuel bank fault
 

I had the engine management light come on during a long run out, I had the
code diagnosed to a fuel bank fault, could this be related to ignition
coils starting to fail ?

I had the light reset & all was well for a couple of weeks until another
long run when it came on again.

I've heard that coils can be troublesome. Car is a 2001 A4, 2ltr. My local
AUDI dealer won't help out at all unless they do the diagnosis, (they want
a lot of money !!)

Any ideas?