F3 E2 error code. water temp sensor error, I tested sensor, it seems to be good, checked sensor wire to ccu, seems good, pump had a quarter and an earring in the cleanout, cant run a diagnosis without the same error (F3 E2) coming up. any more ideas? Please!

Thanks so much for posting. We had the same issue. I did some research that turned up your post. My husband is handy, but this saved us time and he would not have been looking for something so simple. He tested it with a meter, so we knew which wire, then I followed it and BAM, barely touched and it just snapped, right at the ziptie. Some electrical tape and we are back in business.