The error codes indicated that I might have a problem with the Oven Sensor or other parts in the circuit. I ordered the Temp Sensor about 12 noon Friday it was shipped that day and I received it the next day. Continued research on line while I was waiting for the part and found a test for the sensor. I removed it and it tested good. I called APP's tech support and they suggested that I clean the connections in the circuit. I did that and my oven passed a trial run with no problems. I will keep the sensor for a few more weeks incase the problem comes back and if no problems show up I can return the part. Theses are great people to do business with. It's like having an uncle in the parts business.