injector problems

[kajus]

I have a problem with my Audi fuel injectors ( I think) its a v6 3.0 quattro, and all three injectors don't seem to work on one side of the engine , when connected to computer its coming up as injector 2 circuit fault. if I swap injector from the bad side with injector from the good side , injector seem to work, I only tried one injector. I checked engine compression and its fine. Checked for metal shavings in the fuel and its clean. fuel pressure is good , all the sensors and fuel pressure regulator seem to work as well. so the question is , if one injector is faulty on one side, would that make the other two injectors on that side not to work , could it be that is on the loop?