Here is the situation. My Mode Set Button does has stopped working. "Somewhat". The first thing that I thought it might be was an open line or broken wire. Well there is power all the way to the MPEN. And if I hit the button in the pattern to get trouble codes, I get them. So it does seem to be working "Somewhat"

what it will not allow me to do is select what Mode I want it in. RPM, Lake Temp, Hours ex. If anyone has any ideas please chime in