Lg oven not properly heating

General
1

Please make sure to click on General above and select the correct appliance type first.

Brand:
Model Number:
Main Symptom:
What happens & when:

Error Code (if any):
Parts or tests already tried:
Photos / video link:

Tested temp sensor, and both elements and all test good. When oven temperature is set at 350 the actual temperature is between 25 and 50 degrees lower than set temperature.

2

If oven sensor tests good and the elements test good, the oven control will be the problem