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Error code reference

Monogram Microwave Error Code SENSOR ERROR

During a sensor cooking program (Popcorn, Beverage, Reheat, Chicken/Fish, Potato or Vegetable), the door was opened before steam could be detected…

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What the SENSOR ERROR error code actually means

Your Monogram microwave uses a steam sensor to automatically control sensor cooking programs like Popcorn or Reheat, and this error means it did not detect steam the way it expected. Either the door was opened too early during the cooking cycle, or the food did not produce enough steam in time. You can clear it and try again, or simply use the manual Time Cook setting to finish heating your food.

Diagnostic procedure

The full SENSOR ERROR procedure

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1
First diagnostic step
Close the door, press CLEAR/OFF and begin again. If steam was not detected in maximum time, use Time Cook to heat for more time.
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Most common causes of SENSOR ERROR

Ranked by how often they cause this code
  1. 1Door opened during sensor cooking
  2. 2Insufficient steam from food
  3. 3Contaminated or fouled humidity sensor
  4. 4Food not covered or improperly prepared
  5. 5Faulty humidity sensor

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Questions people ask about SENSOR ERROR

What does SENSOR ERROR mean on a Monogram microwave?
SENSOR ERROR on a Monogram microwave means the appliance could not complete a steam detection cycle during a sensor cooking program such as Popcorn, Beverage, Reheat, Chicken/Fish, Potato, or Vegetable. The error triggers either because the door was opened before steam was detected, or because the food did not produce enough steam within the maximum allowed cooking time. The microwave uses a humidity sensor to monitor steam levels and automatically adjust cooking, and this error appears when that process is interrupted or fails to register a reading.
Will resetting the microwave clear the SENSOR ERROR?
Yes, pressing CLEAR/OFF will clear the error code and allow you to restart. However, resetting only removes the displayed error and does not address the underlying cause. If the same conditions repeat, such as opening the door too early or using a very dry or small food item with a sensor program, the error will appear again.
How much does it cost to repair a Monogram microwave showing SENSOR ERROR?
If the error is caused by a fouled sensor or user error, there is no parts cost involved and only your time for cleaning. If the humidity sensor itself has failed and requires replacement, parts and labor costs typically range from $150 to $350 depending on your location and service provider. Obtaining a diagnostic visit from an authorized technician before purchasing parts is advisable to confirm the sensor is the root cause.
How do I fix a SENSOR ERROR on a Monogram microwave?
Press CLEAR/OFF to reset the display, then close the door and restart the sensor cooking program from the beginning. If the food simply did not generate enough steam in time, use the Time Cook function instead and manually add the additional heating time needed. If the error repeats consistently, clean the microwave cavity thoroughly to remove grease or residue that may be blocking the humidity sensor.
Is it safe to use my Monogram microwave after a SENSOR ERROR?
Yes, the SENSOR ERROR does not indicate a safety hazard. It is a functional error related to the steam detection cycle, not a component failure warning related to electrical or thermal safety. You can continue to use the microwave normally using Time Cook or other manual settings even if sensor cooking programs are not working correctly.

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