If you intend to use it a lot, and on other cars why not go the route of the software and connecting cable to lap top, also to be found on ebay. I am assuming you have a laptop in this day and age,(who hasn't) . I am thinking of doing this. At present I have a Avtop Code Reader. which works fine, but I think the software to laptop is more informative and covers more details. If you buy a good one it not only tells you the fault but shows a picture of where to find the faulty component. Good luck and post us to let us know how you get on. Stan ps. Sorry if I have done you out of your commission Peter