Hi All, My check engine light came on Easter evening. Wondering if there might be a "plug-in" tool to read the codes and where to pick one up. The light came on at around 75 MPH, had just felt a medium bump (small pot hole). Car runs fine, no issues with performance but bothers the wife (me too). Read some posts and still wonder if ther might be a tool available that won't cost me my first born. I'm working on getting a Bentley repair guide, but won't be here for a week or so. Thanks for all the great imput.