LG Refrigerator Error Code F5

The F5 code on an LG refrigerator signals a failure of the middle compartment defrosting sensor. The control board has detected that the sensor circuit is either open (disconnected) or shorted, meaning the sensor is not providing a valid temperature reading. This prevents the refrigerator from properly managing the defrost cycle in the middle section of the unit.

Continued use with an active F5 error is not recommended for extended periods. Without a functioning defrost sensor, the refrigerator cannot properly control its defrost cycle, which can lead to frost buildup, reduced cooling performance, and potential food spoilage. Address the fault as soon as possible to avoid further issues.

A reset may temporarily clear the F5 code from the display, but the error will return if the underlying fault with the middle compartment defrost sensor has not been corrected. Resetting without repairing the sensor or wiring does not fix the problem and can allow frost accumulation and cooling issues to continue. The code will only stay cleared once the sensor circuit is functioning correctly.

In many cases, yes. Start by checking the wiring harness connected to the middle compartment defrost sensor for loose connectors, visible damage, or corrosion. If the wiring looks intact, use a multimeter to test the sensor's resistance and check for continuity through the harness. Replacing a sensor or repairing a connector is a manageable repair for someone comfortable working with appliance wiring.

If the fix is a loose connector or minor wiring repair, the cost can be minimal, covering only your time and possibly a small wiring repair kit. Replacing the defrost sensor itself typically costs between $15 and $60 for the part. If a professional technician is needed, expect total repair costs ranging from $100 to $250 depending on labor rates in your area.