First, don't self clean your oven before the holidays. In fact, read up on what damage the self cleaning feature can do to your oven.
How did I fix it, I went on line and saw the comments of appliancepartspros.com. I figured out that it was the thermal fuse that probably went wrong since my oven just went lights out after the cleaning. My oven is a Kitchenaid model # KEBS179BSSOO. The part for this model is AP6022801 or WPW10545255. I spoke with technical support but I still had questions. I followed part of the instructions but they did not apply to my oven. I removed the screws that hold the oven and a black thin cover. They are located on either side of the oven door. I only had to remove one screw on each side. Once they were removed, I was told to remove the long thin covers by doing some movement that I didn't understand. Instead I then removed the 4 screws that are located under the control panel. I could see the thermal fuse since it was within immediate view. Removing the 4 screws allowed me to pull the control panel out. Keep an eye out for the long thin cover plates, they might fall on the floor. They will survive but be careful not to twist them. The metal is malleable. Once it was out I could see the thermal fuse that would need replacing. I used needle nose pliers to separate the black and white plugs.
I sometimes lack finger strength and my hands were slippery and the pliers give me better control. I pulled out the black plug that belonged to the old fuse and then inserted the black plug from the new thermal fuse where the old plug was. I did the same for the white plug, I removed the white plug from the oven and inserted the white plug from the new fuse. I noticed that the old fuse wires had carbon that darkened it, but that was ll. Nothing was melted or burned.. Please do not remove any of the plastic that is on the new fuse itself. I first thought it was packaging that would need to be removed, but when I saw the thermal plug in the oven, I knew that the plastic that surrounded the new fuse must not be removed or cut away, I had a helper hold the control panel. I did not remove the oven door to do this. It really only takes less than an hour to do. I did have a problem pressing in one of the two tabs that need to be pressed into holes that are on a metal plate. These tabs hold the part in place. I used the tips of garden snippers that are very sharp to cut the old tabs away from the metal plate. I chose not to struggle pulling or squeezing them out, again, no finger strength. I did leave a small piece of plastic in the oven because it fell away after I snipped the old tabs. While I was installing the tabs from the new fuse into the metal plate, I was able to snap one of the tabs in but I had to use my needle pliers to hold the thin metal base still while I pushed the other tab into the hole. I oven is now working just in time for Thanksgiving.
By the way, as an aside, I also cleaned the glass that was dirty from grease falling in between the three panes that make up the oven door. This was fairly easy to do but a little nerve wrecking since I didn't want to drop the doors. I had a helper hold the oven door open while I removed the panes to a safe place where I could work. I used soap and water because I didn't want to use any chemicals that might interfere with what looked like a treatment that was done to the glass.
My oven looks great and I won't be using the self cleaning feature again. I like my oven. Thank you to all the folks that helped me. I hope this post helps others and gives them the confidence to do this project. I didn't even have to wait for a repair person.