FixByModel
5E

Samsung 5E: Fridge defrost sensor error

The fresh-food defrost sensor is reading out of range, so the fridge can't run its defrost cycle correctly. It usually points to a bad sensor or its wiring, and can lead to frost build-up and poor cooling.

May need a technician

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Faulty fridge defrost sensor (thermistor)
  2. Loose, pinched, or corroded sensor connector
  3. Ice encasing the sensor
  4. Wiring harness damage
  5. Control board fault
Before you start — unplug the refrigerator before working on it. Mind sharp metal edges, and never open the sealed refrigerant system — compressor, sealed-system and refrigerant work must be left to a qualified technician.

Step-by-step fix

1Power resetUnplug the refrigerator for about 2 minutes, then restore power and see if the code clears.
2Defrost if icedIf there is visible frost, unplug and leave the doors open for several hours so any ice around the sensor melts.
3Inspect the connectorIf accessible, check the defrost sensor's wiring plug for looseness or corrosion and reseat it.
4Test the sensorUse a multimeter to confirm the thermistor's resistance is within its normal range for the temperature.
5Call a technicianIf 5E returns, have the defrost sensor or control board diagnosed and replaced.

Still showing 5E?

If you’ve worked through every step and 5E keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

Samsung refrigerators. Most Samsung refrigerators.

FAQ

What does Samsung 5E mean?

Fridge defrost sensor error. The fresh-food defrost sensor is reading out of range, so the fridge can't run its defrost cycle correctly. It usually points to a bad sensor or its wiring, and can lead to frost build-up and poor cooling.

What causes Samsung 5E?

The most likely cause is faulty fridge defrost sensor (thermistor). Other causes include Loose, pinched, or corroded sensor connector; Ice encasing the sensor; Wiring harness damage; Control board fault.

Can I fix Samsung 5E myself?

Some checks are DIY, but this code often points to an internal component, so it may need a qualified technician.