If your Bosch oven turns off by itself, the touchpad is the most likely cause, especially when some buttons respond intermittently or not at all. A faulty touchpad can interrupt oven operation and may need replacement. A blown thermal fuse is another possibility if the oven overheated. Test the fuse for continuity with a multimeter. If it has no continuity, replace it because a thermal fuse cannot be reset. The touchpad and control panel may also be defective when some buttons work but others do not. If none of the buttons respond, a control board problem is more likely. Next, check for an incoming power problem, such as a tripped circuit breaker. Less commonly, loose or burned connections, failed relays, or an internal fault can cause the Bosch oven to shut off, requiring replacement of the control board or main control board. These checks can help diagnose why your oven turns off by itself, keeps turning off, or shuts off while baking. Enter your Bosch oven model number to find the exact replacement part for your specific range, stove, or oven.
01 - Bosch Range/Stove/Oven Touchpad
If the oven turns off on its own, determine if some of the buttons on the touchpad respond intermittently or not at all. If so, it's likely the touchpad is faulty and should be replaced.
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If the oven gets too hot, the thermal fuse trips to shut off power to the oven. If the thermal fuse has blown, the oven will not heat. However, this is not a common occurrence. To determine if the thermal fuse is at fault, use a multimeter to test the fuse for continuity. If the thermal fuse does not have continuity, replace it. The thermal fuse cannot be reset—if the fuse has blown, it must be replaced.
03 - Bosch Range/Stove/Oven Touchpad and Control Panel
If an oven won't turn on, it's possible the touchpad and control panel is defective. One way to help confirm this is to determine if some touchpad buttons respond while others don't. If some of the buttons still work, then it's quite probable the touchpad and control panel is faulty and requires replacement (if none of the buttons work, a defective control board is more likely the cause of the oven not turning on).
If an oven turns off on its own there could be an incoming power problem. Verify the circuit breaker hasn't tripped.
Common
05 - Bosch Range/Stove/Oven Control Board
The board sends power to all the components in the stove. If the control board connections are loose, or burnt, or the control board is turning off on its own, one of the relays or other components may be bad and the control will need to be replaced.
The main control board sends power to all the components in the stove. If the control board connections are loose, or burnt, or the control board is turning off on its own, one of the relays or other components may be bad and the control will need to be replaced.