--- title: "Oven temperature is wrong" description: "LG oven temperature is wrong — there are three quite different things behind this and they need different answers: an oven that is out by a consistent…" url: "https://lgmiami.support/symptoms/oven-temperature-wrong/" date_modified: "2026-09-05" Appliance type: "Ranges, Wall ovens" --- # LG oven temperature is wrong ### Measure properly before deciding anything Put an oven thermometer on the middle shelf, set 350°F, and leave it for thirty minutes before reading — not fifteen, and not while it is still preheating. Then read it three times over another half hour. Consistently forty degrees low is calibration and it is adjustable. Swinging from 320 to 400 is the sensor. And an oven that reads correctly on a thermometer is an oven where the problem is the recipe or the pan. ### What it usually means, by the kind of LG appliance LG sells one appliance in several forms — five shapes of washer, three kinds of dryer, four fuels of range — and the same behavior points at different things on each of them. A built-in side-by-side and an integrated column are not the same service situation, and a dual-fuel range and an induction range fail in different halves. - **Electric range** — A drifting sensor is the usual cause, and the offset built into the control panel covers a surprising amount of it. - **Gas range** — Gas ovens cycle more widely by nature. A twenty-degree swing around the set point is normal here and is not a defect. - **Convection models** — If convection bakes evenly and conventional does not, the fan is masking a hot spot rather than the oven being right. ### Steady error against swing An oven that is consistently thirty or forty degrees low is not broken in the usual sense — it is measuring slightly wrong and doing exactly what it is told. That is what the calibration offset in the control menu exists for, and it usually solves the whole complaint without a visit. An oven that swings, on the other hand, is losing its measurement intermittently, and no offset fixes that. ### The thing people forget to check A door. An oven is a box with one deliberately weak side, and a hinge that has dropped a few millimeters over ten years lets a surprising amount of heat out at the top corner. The tell is a cavity that preheats slowly, cooks unevenly front to back, and always seems to need longer than the recipe says — with a sensor that measures perfectly well. Calibration drift Ovens drift over years. Most LG models allow an offset from the panel and it needs no parts. The temperature sensor A probe in the cavity wall whose resistance has moved. Swinging rather than steady error. A door that no longer seals A hinge that has dropped or a gasket that has gone hard lets heat out at the top and the oven never catches up. The convection fan F17 or F7. Uneven rather than wrong — one shelf right and another not. Use a real oven thermometer Middle shelf, middle of the oven, thirty minutes. Anything less is guessing. Check the door seal by eye Look along the gasket for flat spots and gaps, and check the door sits square against the frame. Note whether it is wrong or unsteady A steady error and a swinging one are different repairs. Try both cavities on a double oven If one is right, the supply and the board are fine and it is that cavity's sensor. It says 350 and it is not 350 What it usually means Consistently out is calibration; swinging is the sensor Measure at the middle shelf, not at the door and not by eye Most of these can be offset from the panel without any parts Measure properly before deciding anything Put an oven thermometer on the middle shelf, set 350°F, and leave it for thirty minutes before reading — not fifteen, and not while it is still preheating. Then read it three times over another half hour. Consistently forty degrees low is calibration and it is adjustable. Swinging from 320 to 400 is the sensor. And an oven that reads correctly on a thermometer is an oven where the problem is the recipe or the pan. What it usually means, by the kind of LG appliance LG sells one appliance in several forms — five shapes of washer, three kinds of dryer, four fuels of range — and the same behavior points at different things on each of them. A built-in side-by-side and an integrated column are not the same service situation, and a dual-fuel range and an induction range fail in different halves. Electric range — A drifting sensor is the usual cause, and the offset built into the control panel covers a surprising amount of it. Gas range — Gas ovens cycle more widely by nature. A twenty-degree swing around the set point is normal here and is not a defect. Convection models — If convection bakes evenly and conventional does not, the fan is masking a hot spot rather than the oven being right. Steady error against swing An oven that is consistently thirty or forty degrees low is not broken in the usual sense — it is measuring slightly wrong and doing exactly what it is told. That is what the calibration offset in the control menu exists for, and it usually solves the whole complaint without a visit. An oven that swings, on the other hand, is losing its measurement intermittently, and no offset fixes that. The thing people forget to check A door. An oven is a box with one deliberately weak side, and a hinge that has dropped a few millimeters over ten years lets a surprising amount of heat out at the top corner. The tell is a cavity that preheats slowly, cooks unevenly front to back, and always seems to need longer than the recipe says — with a sensor that measures perfectly well. ### Everything takes longer than the recipe says. Measure before assuming. Recipes are written for a nominal 350°F and most ovens are a little off; a real thermometer settles it in half an hour. If the oven measures right, the difference is more likely the pan, the shelf position or a crowded oven than the appliance. ### Can I calibrate it myself? On most LG ovens, yes — there is an offset in the settings menu, usually adjustable by up to about 35°F either way. What is worth doing first is measuring properly, because calibrating against a bad thermometer moves the problem rather than fixing it. --- **[Read full article: Oven temperature is wrong](https://lgmiami.support/symptoms/oven-temperature-wrong/)**