Your oven uses sensors in the back of the cavity to measure the temperature. Based on these sensors’ output, the unit cycles on and off to maintain your desired temperature setting. When the sensors malfunction, the oven can run too hot because no information is being collected. Error codes vary, but F2 is a common code for this problem.
Although it’s not always the case, the electric display can also act as a control panel for your unit. Instead of using knobs to set the temperature and turn on the unit, you use a keypad. Sometimes the function key on this keypad gets stuck, and, depending on your model, the display shows an E7, E9 or E0 error. To fix it, you usually have to replace the display module or the keypad, if it’s not all one part.
A self-cleaning oven has certain functions that other ranges don’t, including the door-locking mechanism that prevents you from accessing the oven during a self-cleaning cycle. This can malfunction in a number of ways, including the latch not locking in the first place or failing to unlatch after the cycle is complete. Depending on your model, it might show an F5 or F9 code on your display. This issue usually requires a replacement of the door-latch mechanism.
A general control board problem is bad news for your self-cleaning oven because it means your unit won’t function at all. Over time, the part can simply fail or there can be electrical damage to it. Depending on your model, you may see an F0, F1 or F5 error code to indicate this problem. You have to replace the control board to fix this problem and resume using your unit.