---
title: "Oven sensor calibration"
description: "LG oven sensor calibration — an oven that is consistently out by twenty or forty degrees is measuring slightly wrong and doing exactly what it is told."
url: "https://lgmiami.support/services/oven-sensor-calibration/"
date_modified: "2026-09-06"
Appliance type: "Ranges, Wall ovens"
---


# LG oven sensor calibration

### The preheat beep is not a measurement

Hang an oven thermometer in the middle of the middle rack, set the oven to 350 and leave it a full twenty minutes after the beep — the beep comes when the cavity first touches temperature, not when it is steady, and the distance between those two moments is where most complaints about an oven live. Then read it three times over the next half hour. A number sitting patiently thirty degrees low is an offset and takes minutes to correct. A number that reads 320, then 390, then 340 is the sensor, and no amount of adjustment fixes a measurement that will not hold still.

What this involves

Steady error is calibration; a swing is the sensor

Measured against a probe, not against the display

Most LG ovens offer an offset of up to about 35°F

Measure properly

Middle shelf, 350°F, thirty minutes, then three readings over another half hour.

Decide which it is

Consistently low is an offset. Swinging is a part.

Check the probe placement

A sensor touching the cavity wall reads the wall. Free to fix and easy to miss.

Apply the offset or replace the sensor

Whichever the measurement says, not whichever is quicker.

Re-measure afterwards

The same test again, so the result is a number.

### My old oven ran hot and I just added twenty-five degrees. Can I carry on doing that?

You can, and plenty of people cook happily that way for years. It is worth correcting if you bake, because a cake is far less forgiving of a swing than a roast is.

### How much offset is too much?

The control menu allows a limited adjustment for a reason. If your oven needs more than that to land on the right number it is not out of calibration — something is wrong, and stretching the offset only hides it.

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**[Read full article: Oven sensor calibration](https://lgmiami.support/services/oven-sensor-calibration/)**