Samsung Refrigerator Error Code 87E — Freezer Defrost Sensor Short
What this means
The 87E error code indicates the freezer defrost sensor has a short circuit, causing it to send abnormally low resistance readings to the control board. This is different from an open-circuit failure (which produces a different code). A shorted sensor may cause the defrost heater to run too little or not at all, leading to frost buildup on the evaporator coils.
Alternate codes: 87C
Step-by-step fix
4 stepsPower cycle the refrigerator
Unplug for 5 minutes, then restore power. If the code clears temporarily, note how long before it returns.
A recurring 87E strongly indicates the sensor itself is failing, not just a wiring glitch.
Access the defrost sensor
Unplug the fridge. Remove the freezer rear panel to expose the evaporator coils. The defrost sensor is clipped to the evaporator tubing, usually near the top.
Defrost any heavy ice buildup before working near the coils.
Test the sensor for a short circuit
Disconnect the sensor and measure resistance. At freezer temperature, a Samsung defrost thermistor should read approximately 16–20 kOhms. If the reading is near 0 ohms or extremely low, the sensor is shorted internally.
Also test from each sensor wire to ground (the evaporator frame). Any reading to ground indicates the wiring insulation is compromised.
Replace the defrost sensor
Remove the shorted sensor and install the replacement. Route the wire the same way and clip it securely to the evaporator tube. Reassemble and restore power.
If the wiring insulation was damaged (wire-to-ground short), also repair or replace the affected wire section.
When to call a professional
If the sensor is good but the control board still reads a short, the board's input circuit may be damaged. A technician should test the board.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Defrost Sensor (Thermistor)
Part #DA32-10105R · $8–$18
If sensor reads near 0 ohms (shorted)
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