When your KitchenAid oven light is out, the most likely cause is a failed oven control board, although this is not common. The control board supplies voltage to the light bulb or light assembly, so test the light socket or assembly for power with a multimeter. If the light switch has continuity but no voltage reaches the socket, the oven control board may need replacement. Next, check the light assembly, since KitchenAid often sells its components as one unit rather than separately. A burned-out oven light bulb is another common cause of an oven light not working. Test the bulb for continuity or install it in an identical socket. If your KitchenAid range uses a halogen lamp, test that lamp the same way. When power reaches the socket but the oven light still will not work, replace the light socket. A faulty light housing can also prevent the bulb or light board from operating when power is present. Disconnect power before testing or replacing electrical parts, and enter your KitchenAid model number to find the exact oven light bulb, light assembly, socket, housing, or control board for your range or oven.
01 - KitchenAid Range/Stove/Oven Oven Control Board
The oven control board is used to send voltage to nearly all of the oven's electrical components including the lights. If the control board is defective, it may be unable to send voltage to the light bulb or light board, although this is not a common problem. You can use a multimeter to determine if power is reaching the light socket or light assembly. If power is not reaching the light socket or light assembly and the light switch tests positive for electrical continuity when tested with a multimeter, then the control board is likely defective and will need to be replaced.
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To determine if a halogen lamp has failed, you can use a multimeter to test it for electrical continuity, or install the lamp into an identical socket to test it.
Use a multimeter to test for power to the light socket. If the light socket is getting power, but the oven light won’t work, this indicates that the light socket is defective. If the light socket is defective, replace it.
If you've determined the light bulb has not burned out or the light board appears to be functioning normally, it's possible that the light housing the bulb or board is installed in is faulty. Use a multimeter to determine if power is reaching the light socket or light assembly. If power is reaching the socket or assembly, then it's likely the light housing is malfunctioning and will need to be replaced.