Summary: Oven temperature was never accurate. Sensor was replaced under warranty and made no difference. The computer board was replaced (off warranty and $400 plus labour) and problem persists. Temperature in oven does not correspond to the set temperature and then temperature moves up and down. It's like baking with a wood stove! This oven is 4 years old and we are going to have to replace it, but never again with a Whirlpool product!!