LG refrigerator Er FS code: freezer temperature sensor error

The freezer temperature sensor is reading out of range, so the freezer cannot control its temperature properly. A failed sensor or a broken or loose sensor wire is the usual cause.

Likely causes

Listed from most to least common.

1. Freezer temperature sensor (thermistor) failed
2. Sensor wire shorted or broken
3. Loose sensor connector
4. Main control board fault

How to fix the Er FS code

Unplug the refrigerator or switch it off at the breaker before removing any panel or filter.

1. 1

   Step 1: Reset the power

   Unplug the refrigerator or switch off its breaker for 5 minutes, then restore power.

2. 2

   Step 2: Check the freezer temperature

   Put a thermometer in the freezer. It should settle near 0°F. If food starts to soften, move it to a cooler.

You'll need: Freezer thermometer.

Parts that may need replacing

Check your model number on the label inside the door or on the back before ordering.

• LG refrigerator freezer temperature sensorCheck prices

When to call a technician

Call a technician to test and replace the freezer sensor, as it sits behind interior panels.

A typical repair for this code costs $150–$300 in the US, including parts and labor. Prices vary by area and model.

Models this applies to

• French door refrigerators (LF, LR and LM series)
• Side-by-side refrigerators (LS and LRS series)
• InstaView Door-in-Door models
• Linear and inverter linear compressor models

Codes can differ slightly between models. Your owner's manual is the final word and is available from LG support.

Common questions