Hello All Members,

I have an 2000 A6 2.7T that the OBD II will not communicate when running. It will pull codes and clear when the car is off, but when it is running gives an error. Please help!!!!!!

 

some code readers dont do logging they only find and erase the code, what you need is VAG and a laptop

 

Sorry i should have mention it also happened at emission when they where trying to connect.

 

do you have an after market radio installed in this car????
if so you must completely shut radio off or vag will not be able to do its job on my pioneer i just remove the face plate and my vag works fine with face plate on it just give me an error

 

factory radio, dealership says my fault on my abs is locking the computer and will not let it communicate.