er fs
Easy Fix
Kenmore · Refrigerators
Freezer Sensor Failure
Quick Answer
Error code Er FS on your Kenmore Refrigerators means: Freezer Sensor Failure. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Access the freezer temperature sensor, typically clipped to the evaporator cover or mounted on the freezer wall
2
Disconnect the sensor and test its resistance with a multimeter (should change proportionally with temperature, approximately 5k-15k ohms at freezer temp)
3
Check the wiring from the sensor to the main control board for any breaks or loose connections
4
Compare the resistance reading to the sensor resistance chart in the service manual for your model
5
Replace the freezer sensor if the resistance does not match the expected value for the current temperature
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Kenmore freezer temperature sensor (model-specific)
Wire harness repair kit
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