Hello Leutle… I’m looking for a way to read at least the error memory of our fleet. I first stumbled over the “finished” devices, which show you the simple error code. Of course, it would be much more interesting to use software on the laptop. Software should be e.g. http://www.obd2-software.de. Just asks me the question about the hardware: Which adapter does it have to be??? He should like to use Fehlerdi agnose, etc. offer for: Audi A2 (year 2002) BMW 318i (year 2002) VW Golf V (year 2005) VW Golf VI (year 2009) VW Passat (year 2002) I have noticed this part: OBD-DIAG® 2055 Interface (http://www.obd-diag.de) Or the one here: mOByDic 3200 RS-232 (http://www.ozenelektronik.com) Or the: 11x multimode OBD-DIAG® 4000 (http://www.obd-diag.de) What is the advantage of the 4000er? The CAN bus should “support” Can I use it to recode (see http://www.motor-talk.de/forum/vw- read-umcode-t2206278.html )? It would be great if someone could explain something to me in this area and give me a nice purchase recommendation. Before the allegations come: I have now 2 hours google and the forum search tried to get me a rough overview of the topic OBD2, however, it still seems to me in many places quite Spanish…