Is your Bosch oven light out? The problem may be in the oven control board, light assembly, light bulb, halogen lamp, light socket, or light housing. The Bosch oven control board supplies voltage to the oven light, so a defective board can prevent the bulb or light assembly from working, although this is not common. Next, the complete light assembly may need replacement because some components are not sold separately. A burned-out light bulb or failed halogen lamp is another likely cause of an oven light not working. Test the bulb or lamp for continuity with a multimeter, or try it in an identical socket. If the socket receives power but the oven light stays off, replace the light socket. A faulty light housing can also cause the problem when power reaches the socket or assembly. Always disconnect power before testing or replacing parts. Enter your Bosch oven's model number to find the exact replacement oven light bulb, light assembly, control board, socket, or housing for your appliance.
01 - Bosch 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.