The E3 F3 does indicate that the electronic oven control board detects that the oven had an over-temperature condition. This is likely caused by a bad oven temperature sensor probe since it only occurs when the temperature is above 400 degrees.
There is a chance that the electronic oven control is bad but this is less likely than having a bad sensor. A bad wiring harness between the sensor and the control board could also cause this problem.
If you have a volt/ohm meter, you can
unplug the range
and check the resistance of the sensor probe. The image below shows how to access this component. At room temperature (75 F), the sensor should measure about 1080 ohms. If you place the sensor in a glass of ice water at 32 F, it should measure about 1000 ohms. If the resistance is way off, then the sensor will apparently need to be replaced.
You can order parts from the
This information may help you fix this problem yourself. If you need more help, reply with additional details and we will assist you further.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services