The model number that you indicated in your question is actually the part number for the owner's manual pertaining to ranges which begin with model number 790.9912 . . .
The following information should be accurate for your model of Kenmore range. There are several different models in this class of ranges. If you suspect that the information does not pertain to your range, resubmit your question with the full model number off the range itself. The model number is on a plate that is in front of the right front leveling leg of the range. You will need to pull out the bottom drawer to view this plate.
The F13 indicates a problem with the EOC (Electronic Oven Control board). This can be caused by a power surge or glitch through the electrical supply lines. You can try disconnecting electrical power completely from the range by unplugging it. Leave it unplugged for a few minutes. If the fault code returns when you plug the range back in, then the EOC will need to be replaced.
I included an explanation of the fault codes for a portion of the 790.9912 class of Kenmore ranges below. This is the sheet that likely pertains to your specific model.
If you need more help with this problem, resubmit your question with additional details and the full model number of your range.