Michael Thompson Key Takeaways
- A failing bake element often shows visible damage — look for blistering, breaks, or bright spots
- LG ovens with convection may have a failed fan motor causing uneven heat distribution
- Temperature sensor resistance should read approximately 1,080 ohms at room temperature
- Oven calibration can be adjusted through the LG settings menu without a service call
The Bottom Line
Uneven heating in an LG oven is usually caused by a failing bake element or a malfunctioning convection fan. Both are affordable repairs that restore consistent cooking performance.
LG oven not heating — here's what you need to know.
If your LG oven burns food on one side while leaving it undercooked on the other, or if baking temperatures seem consistently off, there's likely a component issue affecting heat distribution. Most causes are diagnosable at home and repairable at reasonable cost.
Inspect the Bake Element
The bake element is the coil at the bottom of the oven cavity. When working properly, it should glow evenly red-orange across its entire length. Look for signs of failure: blistering, bubbling, cracks, or bright spots that indicate short circuits. A partially failed element creates hot and cold zones in the oven. Turn the oven to bake at 350°F and observe the element — uneven glowing confirms failure. Replacement bake elements for LG ovens cost From $30 and are one of the simplest oven repairs, requiring only a screwdriver to remove two mounting screws and disconnect the wire terminals.
Check the Convection Fan
LG convection ovens use a rear-mounted fan to circulate hot air for even cooking. If this fan motor fails, you lose the primary mechanism for uniform heat distribution. Open the oven while preheating in convection mode and listen for the fan. Silence or grinding noises indicate a failed motor. The convection fan motor is accessible from the rear panel and typically costs From $80 to replace with parts and labor.
Test the Temperature Sensor
The oven temperature sensor (also called an RTD sensor) is a thin probe extending into the oven cavity, usually mounted in the upper rear wall. It tells the control board the current temperature. A faulty sensor sends incorrect readings, causing the oven to overheat or underheat. Disconnect the sensor and measure resistance with a multimeter: at room temperature (70°F), it should read approximately 1,080 ohms. Significantly different readings mean the sensor needs replacement (From $20 part).
Calibrate the Oven Temperature
LG ovens allow temperature calibration adjustment through the settings menu. If your oven runs consistently hot or cold by a set amount (say, always 25°F too hot), you can offset the temperature without replacing any parts. Consult your LG owner's manual for the exact calibration procedure for your model — it typically involves holding certain buttons to enter calibration mode, then adjusting in 5°F increments up to ±35°F.
Door Seal and Gasket
A worn or damaged oven door gasket lets heat escape unevenly, creating temperature inconsistencies. Feel around the door edges while the oven is heated — you shouldn't feel significant hot air escaping. If the gasket is hardened, cracked, or compressed flat, replace it. LG oven door gaskets cost From $25 and typically press or hook into a channel around the door without tools.