Located on the back of the oven cavity,or a broken, burnt wire to the elements.

The easiest way to check,

*** This is a LIVE voltage test, so be careful ***

Turn power off the the oven,

Dismount the bake element from the oven cavity, and slide element out as far as possible, leave the wires attached.

Restore power and program a bake cycle,

Check for 220 VAC across the terminals of the bake element,

If you have the 220 vac, you have a bad bake element.

If you have 120 vac you have lost a power leg,

and will need to acces the back of the oven, to check the fuse for open and wiring for damage.

Good Luck,

:) :) :)