Direct answer: When the upper oven in a double oven will not heat, the usual causes are a wrong mode or delayed start setting, a door that is not fully registering closed, lost power to the heating circuit, or a failed upper-oven heating part such as the bake element, igniter, or oven sensor.
Most likely: Start by confirming the upper cavity is actually being told to bake and that it begins preheating. If the control looks normal but the upper oven stays cold, the strongest homeowner-level suspects are the upper oven bake element on electric models or the upper oven igniter on gas models.
Treat this like two separate ovens sharing one cabinet. If the lower oven works and the upper does not, that is a useful clue. Reality check: a lot of 'dead upper oven' calls turn out to be a missed mode, Sabbath or delay setting, or a door not quite closed. Common wrong move: replacing parts because the display lights up, even though the upper oven was never actually calling for heat.
Don’t start with: Do not start by ordering a control board. Controls do fail, but not nearly as often as a heating part, sensor, or a simple setting problem.
The display accepts a bake setting, but the upper cavity never gets warm and you do not smell heat, feel heat, or see the element glow.
Start here: Start with settings, door closure, and power clues, then move quickly to the upper bake element or upper oven igniter branch.
Broil produces heat in the upper oven, but bake mode leaves the cavity cold or barely warm.
Start here: This points strongly to the upper bake-side heating part rather than a total power loss.
The cavity gets warm eventually, but preheat drags on and food comes out underdone.
Start here: Check for a weak upper bake element, weak upper oven igniter, or an upper oven sensor reading off.
Preheat starts, then the heat drops out too soon or cycles weakly and the cavity stalls below target.
Start here: Look at the upper oven sensor and heating pattern before suspecting the upper oven control.
On double ovens, it is easy to set the wrong cavity or leave a timed feature active. A door that is slightly open can also keep the upper oven from heating normally.
Quick check: Cancel the cycle, power the oven off for a minute, restart upper bake at a moderate temperature, and press the door closed firmly while watching for preheat to begin.
If the upper oven broils but will not bake, or the lower oven works while the upper stays cold, the upper bake element is one of the most common failures.
Quick check: With power off and the oven cool, inspect the upper bake element for blistering, cracks, burn spots, or a section that has split open.
A gas upper oven may click or glow but still not light if the igniter is too weak to open the gas valve reliably.
Quick check: Start upper bake and watch through the first minute or two. If the igniter glows but the burner never lights, the upper oven igniter is a strong suspect.
When the upper oven starts heating but runs cool, overshoots, or quits early, the sensor can misread cavity temperature and throw the cycle off.
Quick check: If the heating parts seem to work but the upper oven temperature is clearly off by a wide margin, move the sensor higher on the list.
A surprising number of double-oven complaints come down to the wrong cavity, a delayed cycle, or a door that never fully registers shut.
Next move: If the upper oven starts heating normally now, the problem was likely a setting issue or a door that was not fully registering closed. If the display looks normal but the upper oven still stays cold, move on to the heating-pattern check.
What to conclude: You want to separate a control-input problem from a real no-heat problem before opening anything up.
The difference between no heat, broil-only heat, and weak heat points you toward the right part family fast.
Next move: If bake and broil both heat, but the oven still cooks badly, skip ahead to the temperature-sensor branch. If broil works but bake does not, or the igniter glows without flame, you have a much narrower repair path.
What to conclude: Broil-only operation usually points to the upper bake element on electric models. Glow-without-flame usually points to a weak upper oven igniter on gas models.
Once you know the upper oven is truly not heating, the next best check is the part that actually makes heat in bake mode.
Next move: If you find a clearly damaged bake element or a glowing-but-not-lighting igniter, you have a supported repair path. If the heating part looks normal and the symptoms are more about wrong temperature than no heat, the sensor is next.
If the upper oven heats some but not enough, the sensor is a better bet than the control in many cases.
Next move: If the temperature pattern clearly points to a bad reading rather than no heat, replacing the upper oven sensor is the sensible next move. If the sensor looks fine and the heating pattern still makes no sense, the problem may be in wiring or the upper oven control path.
By this point you should have a short, evidence-based list instead of guessing at expensive parts.
A good result: If the upper oven preheats normally and holds temperature, the repair path was correct.
If not: If the upper oven still will not heat after the matching part replacement, the remaining likely causes are wiring damage or an upper oven control issue.
What to conclude: This is where you either finish the repair with confidence or stop before the expensive guess.
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That usually means the shared power supply is not the main problem. The fault is more often in the upper oven itself: a setting issue, upper bake element, upper oven igniter, upper oven sensor, door problem, or the upper control path.
No. A working display only tells you the control has some power. The upper oven can still have a failed bake element, weak igniter, bad sensor, or a control output problem.
Usually no. A bad upper oven door gasket more often causes slow preheat, heat loss, and poor temperature hold. A completely cold upper oven points first to settings, power to the heat circuit, or a failed heating part.
If the upper oven stays cold or broil works but bake does not, think heating part first. If the upper oven does heat but runs far below or above the set temperature, think upper oven sensor before control.
Not as a first guess. Controls are expensive and fitment-sensitive, and this page does not support buying one on symptoms alone. Rule out the upper bake element, upper oven igniter, sensor, door issue, and obvious wiring damage first.
That is a classic weak-igniter symptom on a gas oven. It can glow and still fail to draw enough current to open the gas valve. In that case, the upper oven igniter is the likely fix.