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Error Code

Kenmore Refrigerator FD Lo / FD Hi Error Code

Plain-language guidance for Kenmore code FD Lo/Hi on Refrigerator — symptoms, safe checks, and when to call a technician.

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At a glance

Error code overview

A plain-language snapshot of FD Lo/Hi for Kenmore Refrigerator — confirm the model series before you act.

Lena Hart Written by Lena Hart Appliance Repair Content Specialist Published October 20, 2026

Content status Verified

Error code FD Lo/Hi
Appliance Refrigerator
Quick answer

FD Lo or FD Hi is a freezer defrost sensor failure on Kenmore bottom-freezer Trio refrigerators, model numbers starting 111.

Model compatibility

Kenmore reuses codes across series and model years, so FD Lo/Hi may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

Freezer defrost sensor failure (low or high reading).

FD Lo and FD Hi are freezer defrost sensor failure codes on a Kenmore bottom-freezer Trio refrigerator with a model number starting 111.

Steps listed in the manual

You start by unplugging the refrigerator. After that the freezer defrost sensor wiring, which is connected to the control board, gets checked for damage and any broken wires are repaired.

If the wiring is fine, a technician measures the resistance through the freezer defrost sensor circuit from the control board. The sensor is replaced if the reading is outside the manual’s range. The only part named is the freezer defrost sensor.

Related codes

F dS is a freezer defrost sensor error. Defrost heater trouble shows up as F3 for the freezer defrost heater, and top-freezer owners may see LED 3 flickers for the defrost temperature sensor.

Kenmore refrigerator repair in Los Angeles

Call (310) 554-8899 if you are in Los Angeles and the code is still on the display. Mention FD Lo or FD Hi and the model number. You can also read the refrigerator service page.

Source: Sears PartsDirect – Kenmore 111 model bottom-freezer refrigerator error codes

Caution

Safety warning

Important safety warning

Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.

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