How to fix Bosch oven overheating problems

What do you do when your Bosch oven starts overheating, burning your dishes, and causing frustration? Not only can an overheating oven ruin your meals, but it can also pose safety hazards. We’re here to explain why this happens and how to fix it yourself to save time and money!

If you find out that you need any replacement parts for your appliance while you’re troubleshooting, you can enter your model number at AppliancePartsPros.com to order them. Most orders arrive in just two business days, and we have thousands of free guides to show you how to install your new parts.

Common causes of overheating

Knowing where the following parts are and how they function will give you a better idea of what might be causing the overheating issue and where to start troubleshooting.

• Door gasket: The door gasket is the rubber or silicone seal around the edge of the oven door. Its job is to keep heat inside by sealing the door properly when it’s closed, which helps maintain even cooking temperatures.
• Thermostat: The thermostat is usually behind the control panel or at the back of the oven. It controls the oven’s temperature by turning the heating elements on and off to keep things at the right level.
• Temperature sensor: You’ll find the temperature sensor inside the oven on models that don’t have a thermostat. It measures the heat in the oven and sends this information to the control board, so the oven knows when to adjust the temperature.
• Control board: The control board is located behind the oven’s control panel. It acts as the brain of the oven, processing signals from the thermostat and temperature sensor to decide when to turn the heating elements on or off.
• User settings: These are the knobs or digital buttons on the front of the oven that let you set the temperature and cooking mode. The oven operates based on the settings you choose.

Need help using a multimeter? Check out our guide on how to use a multimeter to test appliance parts.

Safety precautions   

Safety should always be a priority when working on any appliance. Here are a few practical tips to help you stay safe:

Important: The troubleshooting information in this article is based on general service manuals and may not apply to your specific appliance model. While we strive to offer helpful advice for DIY appliance repairs, variations in models and configurations can lead to differences in troubleshooting steps, error codes and part replacements. For the most accurate guidance, we strongly recommend consulting the technical sheet for your specific appliance model.

• Turn off the power to the appliance by unplugging it or switching off the circuit breaker before starting any maintenance or repairs. This protects you from the risk of electric shock.
• Wear insulated gloves to shield your hands from sharp edges, pinching hazards, or debris.
• Work at a steady pace and take your time to avoid accidents or injuries.
• Make sure your workspace is well-lit so you can clearly see and access the parts you’re working on.
• Keep the area clear of clutter, and ensure children and pets stay out of the workspace.
• Never handle internal parts with wet hands. Check that both your hands and the work area are completely dry.
• Refer to your appliance’s user manual for any specific instructions or safety guidelines related to the part or repair.
• Handle parts gently to avoid damage to the appliance or potential injuries from applying too much force.
• Use safety glasses when dealing with chemicals, dust, or large debris to protect your eyes from harm.
• If the appliance was recently used, give it enough time to cool down before working on any heated components.
• Take photos or notes of wiring connections and terminals before disconnecting anything to make reassembly easier.
• Avoid touching exposed wires or terminals. If you must handle wires, use non-conductive tools or wear insulated gloves to minimize the risk of electrical shock.

Visit our repair help page for more information.

How to troubleshoot and resolve

Follow these steps to identify the problem and make the necessary repairs:

Inspect the door gasket 

Open the oven door and carefully examine the gasket around its edge. Look for cracks, tears, or gaps in the seal. If the gasket is worn or damaged, replace it. Most door gaskets can be easily removed and replaced by snapping a new one into place.

Reset the control board 

Sometimes a glitch in the control board can cause overheating.

1. Turn off the oven’s power at the circuit breaker and wait a few minutes.
2. Turn the power back on to reset the system.
3. If the problem continues, the control board may need replacing. Carefully remove the old board and install a new one designed for your oven model.

Check the temperature 

Place an oven thermometer inside the oven and set the oven to a specific temperature. Let the oven preheat and then compare the thermometer reading to the set temperature. If the actual temperature is significantly higher, the thermostat or temperature sensor could be faulty.

Test the temperature sensor or thermostat

The temperature sensor or thermostat, depending on your model, can be tested for continuity to determine if it’s working correctly.

1. Locate the part on the back wall inside the oven or control panel area.
2. Use a multimeter set to the ohms setting and check the resistance.
3. If the reading is out of the acceptable range or shows no continuity, replace the part.

Replace the sensor or thermostat if necessary

1. Access the thermostat or sensor by removing the back panel of the oven or control panel area.
2. Disconnect the wires and unscrew the old part.
3. Install the new part and reconnect the wires. Follow your oven’s manual for detailed instructions.

Visit our Bosch oven parts page to find the right control board for your model.

More help

Thanks for reading! If you’re in need of parts, head to AppliancePartsPros.com with your model number. With over two million parts in stock, most arrive in just two business days. If you need help choosing the right part or placing an order, call us at 1 (877) 477-7278.

While you wait, visit our DIY blog or watch our YouTube channel, featuring thousands of repair tutorials.

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