Remove the control panel back cover and check for 120V between the black wire and the white/red wire on the spark module (wires have to be removed) while the control calls for Bake.
If there is 120V then the problem is a bad spark module.
If there is no 120V then the problem is a bad control board.
- The part number for the spark module is
AP3672576
- The part number for the control board is
AP3872569
Gene.