[:-] I have a 97 a4 2.8quattro and just bought a scan tool. 4 faults were found,but the only one
I can't understand is 16845 ( fuel level sensor circ.range/performance) Any one in the audi-ence that can help me?? thanks D-town audi

 

its a short in the wiring to the fuel level sender unit

 

That type of code will usually be accompined by an inaccurate fuel gauge reading. Its an indicator that one of your fule level sendors is on its way out. If your fuel gauge reads ok theres probably just one bad spot on the resistor in the sender.