· Todd Martin · Home Appliances · 10 min read
Why Does My Ge Microwave Says Sensor Error

Fixing Your GE Microwave Sensor Error: A Quick Guide
You put your leftovers in the microwave, press start, and then… “Sensor Error.” What a frustrating sight! It stops your cooking plans dead in their tracks. Many GE microwave owners experience this message. This error prevents your appliance from working properly.
I know how annoying it is when your GE microwave says “Sensor Error.” This guide helps you understand why this happens. We will explore common reasons for this error message. You will learn simple steps to troubleshoot and fix it yourself. We will cover power issues, humidity problems, door parts, and more. Let’s get your GE microwave back to heating food.
Takeaway
- Reset Power: Unplugging your GE microwave for a few minutes can clear temporary glitches causing a sensor error.
- Clean Sensors: Ensure the humidity sensor, often located on the interior ceiling, is free from food splatters and moisture.
- Check Door Latch: A misaligned or damaged door latch can prevent the microwave from starting, sometimes triggering sensor errors.
- Avoid Excess Steam: Too much steam during cooking can confuse the humidity sensor, so use appropriate cook times and settings.
- Call a Professional: If basic troubleshooting fails, a faulty sensor, control board, or other internal part may require expert repair.
Concise Answer
A “Sensor Error” on your GE microwave often means its internal humidity or temperature sensor detects a problem. This can be due to excessive steam, a dirty sensor, a faulty door switch, or a temporary electronic glitch. Simple troubleshooting steps like resetting power or cleaning can resolve the issue.
Understanding the GE Microwave Sensor Error Message
When your GE microwave says “Sensor Error,” it indicates a specific problem. The microwave uses sensors to detect steam and temperature. These sensors help it cook food accurately. For example, a humidity sensor detects moisture released from food. This allows the microwave to adjust cooking time. If this sensor malfunctions or gets blocked, the microwave displays an error.
The error message protects your appliance. It prevents improper operation or damage. It also signals a need for attention. The microwave might stop running entirely. Sometimes, it may just refuse to start. This sensor error is a common issue for many microwave models. Understanding its purpose helps in fixing it.
Several factors can trigger this error. It could be something as simple as condensation. It might be a more complex internal component failure. My experience has shown that these errors are often fixable. You do not always need a technician. We will explore these causes in detail. This information will help you diagnose the problem at home.
Basic Troubleshooting: Power Cycle and Environment Checks
Before diving into complex fixes, try basic steps. A power cycle is often the simplest solution. It clears minor electronic glitches. Unplug your GE microwave from the wall outlet. Wait for about five to ten minutes. Then, plug it back in. This reset can often resolve a temporary “Sensor Error.”
Next, look at the microwave’s environment. Is the area around the microwave humid? Is there steam from other cooking? Excessive moisture in the air can affect the sensor. Make sure your kitchen is well-ventilated. Using an exhaust fan helps remove excess steam. This prevents the sensor from getting confused.
Also, check the microwave’s interior. Look for any spills or food debris. These can block or interfere with sensors. My friend had an error once. It turned out to be a piece of popcorn stuck near the sensor vent. Cleaning the inside of your microwave regularly helps. This simple step can prevent sensor issues. For general troubleshooting, especially if your microwave operates but won’t heat, consider visiting our guide on why is my GE microwave running but not heating.
The Role of the Humidity Sensor: Cleaning and Obstructions
Your GE microwave’s humidity sensor is a key component. It detects steam from food. This sensor helps determine when food is cooked. It is usually a small, electronic component. You often find it inside the microwave cavity. It might be on the ceiling or a side wall. Food splatters can cover this sensor. Grease and grime can also build up.
When the sensor is dirty, it cannot detect humidity correctly. This leads to the “Sensor Error” message. Cleaning it is important. Use a soft, damp cloth to wipe the sensor area. Make sure the microwave is unplugged first. Avoid harsh chemicals. They can damage the sensor.
Sometimes, physical obstructions cause problems. A plate might sit too high. A large bowl could block the sensor’s path. Ensure there is nothing directly touching or blocking the sensor’s opening. Always allow proper airflow inside the microwave. If your Samsung microwave shows a “SE” error, which often relates to sensor issues, you might find some parallels in our article on why is my Samsung microwave beeping and says SE. Keeping the sensor clean helps it work right.
Door Latch Assembly: A Common Culprit
The door latch assembly is vital for microwave operation. It has switches that tell the microwave if the door is closed. If these switches do not engage correctly, the microwave will not start. Sometimes, a “Sensor Error” can appear due to a faulty door switch. The microwave thinks something is wrong, even if the sensor itself is fine.
Inspect your microwave door. Look for any visible damage to the latch or the door itself. The door might not be closing completely. This misalignment prevents the switches from activating. Gently try opening and closing the door a few times. Listen for a distinct click. This click confirms the latches engage properly.
Over time, door springs can weaken. The latch mechanism can wear out. This causes the door to sag or not close tightly. If you notice a loose door or unusual movement, this could be the problem. A broken door switch needs replacement. This is a common part to fail in microwaves. If you have a KitchenAid microwave showing a similar “open/close door” error, you can find more information on why does my KitchenAid microwave says open close door. This issue is often overlooked but frequently resolves “Sensor Error” messages.
Thermistors and Temperature Sensors: Overheating Issues
Beyond humidity, microwaves also have temperature sensors. These are often called thermistors. They monitor the internal temperature of the microwave. This prevents overheating. If a thermistor detects an abnormally high temperature, it signals a problem. This can trigger a “Sensor Error.”
Overheating can happen for several reasons. Running the microwave empty is one common cause. It can also occur if the ventilation vents are blocked. Ensure the microwave’s vents are clear. Do not place objects on top or around the microwave. These items can restrict airflow. Restricted airflow causes heat buildup.
A faulty thermistor itself can also cause this error. It might falsely report high temperatures. In this case, the part needs replacement. This usually requires a technician. If your GE microwave turns on but does not heat, it could be related to overheating protection or a component failure. For more insights on this specific issue, check our article on why does my GE microwave turn on but not heat up. Always unplug the microwave before checking vents or attempting any internal inspection.
Control Board Malfunctions and Professional Help
Sometimes, the “Sensor Error” comes from the microwave’s brain. This is the control board, or main circuit board. The control board processes all signals from sensors. It also manages cooking functions. If the board malfunctions, it can misinterpret sensor readings. It might even send incorrect error codes.
A control board issue is less common but more serious. It can manifest as strange behavior. The microwave might start by itself, or the clock could turn off. If your GE microwave shows symptoms like these or keeps tripping your breaker, it points to a deeper electrical issue. For power-related problems, you can read more at why does my GE microwave keep tripping the breaker.
Troubleshooting a control board usually needs a professional. Replacing the control board is expensive. It also requires specialized knowledge. I recommend calling GE customer service or a certified appliance repair technician. They have diagnostic tools. They can confirm if the control board is the problem. Do not attempt control board repairs yourself unless you have electrical training.
Preventive Measures and Maintenance Tips
Preventing future “Sensor Error” messages is possible. Regular cleaning is the best defense. Wipe down the microwave interior after each use. This stops food splatters from drying and hardening. Pay close attention to the ceiling and sides. That is where humidity sensors are often located.
Ventilation is another key factor. Ensure proper clearance around your microwave. Do not block the air vents. Over-the-range microwaves need the fan to work effectively. Using the exhaust fan during cooking helps clear steam. This prevents the humidity sensor from getting overloaded.
Avoid overfilling the microwave. Use appropriate cookware and portion sizes. Excessive steam from large quantities of food can overwhelm the sensor. Also, remember to power cycle your microwave occasionally. Unplug it for a few minutes once a month. This can help clear minor software glitches. By taking these simple steps, you can extend the life of your GE microwave. You can also avoid frustrating error messages.
FAQ Section
Can a GE microwave sensor be replaced?
Yes, a GE microwave sensor can be replaced. Humidity sensors or thermistors are specific components. A qualified appliance technician can usually replace them. The cost varies depending on the specific part and labor. It is often more cost-effective to replace a sensor than the entire microwave.
How do I reset a GE microwave with a sensor error?
To reset your GE microwave, simply unplug it from the wall outlet. Wait for about 5 to 10 minutes. This allows the internal components to fully discharge. Then, plug the microwave back in. This power cycle often clears temporary sensor error codes caused by minor glitches.
What is a humidity sensor in a microwave?
A humidity sensor in a microwave detects the amount of steam or moisture released from food during cooking. It helps the microwave adjust cooking time and power levels automatically. This ensures food is cooked properly without overcooking or undercooking. It is a key part of “sensor cooking” features.
Why does my microwave show “sensor error” even after cleaning?
If your microwave still shows “sensor error” after cleaning, the issue is likely not just dirt. It could be a faulty sensor that needs replacement. A problem with the door latch assembly or the main control board can also cause this. Further diagnosis by a technician may be necessary.
Is it safe to use a microwave with a sensor error?
It is generally not safe to use a microwave that displays a “Sensor Error.” The error indicates a malfunction that affects the microwave’s ability to operate correctly. It might lead to improper cooking, overheating, or other safety hazards. Address the error before using the appliance again.
Conclusion
Facing a “Sensor Error” on your GE microwave can feel like a major problem. However, many common causes have simple fixes. We explored various reasons, from humidity sensor issues to door latch problems. We also covered the importance of power cycles and environmental checks. Cleaning your microwave’s interior regularly can prevent many of these headaches.
I encourage you to try the troubleshooting steps outlined in this guide. You might save yourself a service call. If the “Sensor Error” persists after your efforts, it is time for professional help. A qualified technician can diagnose internal component failures like a faulty thermistor or control board. Fixing your GE microwave sensor error means you get back to easy meal preparation. Knowing these solutions empowers you to keep your kitchen running smoothly.