Vag 405
 

Autel VAG 405 showing "link error".
The first time I hooked it up it read the engine codes fine and also cleared them. I then disconnected it and drove the car for about 15 minutes and then tried to hook it up again and see if any codes threw again and I get the link error. I tried turning the ingnition off for 10 sec. check the connections and try again. I also disconnected the unit, started the engine, turned it off, reconnect the unit etc. several times and still getting link error. Any ideas?