dS
Frigidaire
Defrost Sensor or Door Switch Sensor Error (Model Dependent)
Display shows dS; refrigerator may not defrost correctly or may show door status incorrectly.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open or shorted defrost sensor, Faulty door switch sensor circuit, Damaged wiring harness, Defective main control board
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing sensors or control boards.
Steps to address dS:
- 1. Identify function: Refer to the tech sheet for your specific Frigidaire model to confirm whether dS refers to a defrost sensor or door sensor.
- 2. If defrost sensor: Access the evaporator area, locate the defrost sensor (thermistor), and test its resistance. Replace if out of specification.
- 3. If door sensor: Test the door switch for proper operation and continuity. Replace the door switch if faulty.
- 4. Inspect wiring: Check the harness from the sensor/switch to the main control board for breaks or corrosion.
- 5. Replace control board if needed: If sensor and wiring are good, the main control board may not be reading the signal correctly and may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Defrost Sensor
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