Fred I have found that the code only tells you the part that is bad 10% of the time. You have to learn what code or group of codes leads to the problem. It is confusing more so on The Cummins engines I work on.
Best if I stick to fixing dents and leave the electrical to you and Biff. If I get a problem with my car sensors I'll try a hammer and if that don't work I'll trade you and you fix my car and I'll put the new 1/4 panels on your A body.:)