Double wall ovens give each cavity its own heating elements and sensor, sharing a central control board in most cases — so a problem confined to just one cavity is a useful diagnostic clue that usually points away from the shared board and toward that cavity’s own parts.

An older Kenmore wall oven that swings hot and cold during a single bake isn’t behaving randomly — the pattern of the swing usually tells you exactly what’s failing.

Kenmore sold wall ovens for decades, and a lot of them are still baking daily — a little regular attention keeps an older unit accurate for years longer.

Kenmore sold standalone wall ovens for decades even though kenmore.com’s current lineup doesn’t list one today, so genuinely older units are still common in kitchens. Most were built on Whirlpool’s wall-oven platform, diagnosed the same way regardless of the Kenmore badge — bake/broil element, temperature sensor, and door lock mechanism tested directly.