Broiler stays completely cold
The control responds, but the top of the oven never glows, never ignites, and food gets no top heat.
Start here: Start with the cooking mode, timer, and door-position check, then watch for any sign of heat or ignition.
Oven heating problem
Bosch Oven Broiler Not Working
Direct answer: When a Bosch oven broiler stops working, the usual causes are the wrong cooking mode, a door position issue, a failed oven broil element on electric models, or a weak oven igniter on gas models. Start by confirming the broil setting and watching what the oven actually does in the first minute.
Most likely: If the oven otherwise powers up normally, the strongest repair paths are a failed oven broil element, a weak oven igniter, or an oven temperature sensor that is reading wrong enough to shut broil down early.
Separate the lookalikes early: does the broiler stay completely cold, glow but never heat, heat weakly, or shut off too soon? That pattern tells you a lot. Reality check: many broil complaints turn out to be a mode or door-position issue, not an expensive electronic failure. Common wrong move: replacing parts after one quick test without watching whether the oven glows, sparks, clicks, or heats at all.
Don’t start with: Do not start by ordering a control board. On ovens, broil failures are more often a heating part, ignition part, or setup issue than the main control.
Completely cold broilerCheck the selected mode, start command, and whether the oven shows any glow, spark, or heat in the first 60 seconds.
Weak or short-cycling broilerLook for a partial glow, uneven top heat, or a broiler that starts then quits fast, which points more toward a failing heating part or sensor.
Last reviewed: 2026-04-17
What the broiler is doing tells you where to look first
Broiler glows or ignites weakly
You get some heat, but it is slow, patchy, or not strong enough to brown food.
Start here: Look for a partially failed oven broil element on electric models or a weak oven igniter on gas models.
Broiler starts then shuts off fast
The broiler comes on briefly, then quits before the oven cavity gets proper top heat.
Start here: Check for a bad oven temperature sensor reading or a heat-related control issue after ruling out the heating part.
Bake works but broil does not
The oven can still bake, but the broil function alone is dead or very weak.
Start here: That usually points to the broil-side heating component rather than a total power problem.
Most likely causes
1. Wrong broil mode, delayed start, or door-position issue
A lot of broil complaints happen when the oven is not actually in an active broil cycle or the door position is not what that oven expects.
Quick check: Cancel the cycle, set a fresh broil cycle, and watch the oven for the first minute with the door positioned as your use-and-care instructions call for.
2. Failed oven broil element on an electric oven
If bake still works but the top element stays dark, heats only in one section, or shows blistering or a split, the broil element is a strong suspect.
Quick check: Look for bright orange glow across the full broil element. A dead section or visible damage usually means the oven broil element is bad.
3. Weak oven igniter on a gas oven
Gas broilers often fail because the igniter glows weakly or takes too long to pull enough current to open the gas valve.
Quick check: Start broil and watch for an igniter glow. If it glows but the burner does not light, or lights late and weakly, the oven igniter is the likely fix.
4. Out-of-range oven temperature sensor
If the broiler starts but cuts out too early or acts erratic while the controls otherwise seem normal, the sensor can be feeding bad temperature information.
Quick check: Notice whether the broiler behavior is inconsistent across repeated starts and whether bake temperatures also seem off.
Step-by-step fix
Step 1: Confirm the oven is actually in an active broil cycle
Broil problems get misread all the time because the oven is in the wrong mode, waiting on a timer, or not started the way the control expects.
- Cancel anything currently running.
- Set the oven to broil again, using a normal broil setting rather than a timed or delayed cycle.
- Make sure the clock and timer are not holding the oven in a waiting state.
- Watch and listen for the first 30 to 60 seconds after pressing start.
- If your oven has guidance about broiling with the door closed or cracked, follow that expected position during the test.
Next move: If the broiler comes on normally after a clean restart, the problem was likely a setting or cycle issue rather than a failed part. If the broiler still stays cold or acts weak, move on to identifying whether you have an electric heating failure or a gas ignition failure.
What to conclude: You want to know whether the oven is refusing the command or trying to broil and failing physically.
Stop if:
- The display is dead or the control panel is not responding at all.
- You smell gas and the burner does not light.
- You see arcing, sparks, or burned wiring.
Step 2: Watch the first minute and separate electric from gas behavior
The next move depends on what the oven actually does when broil starts. A dark electric element and a glowing-but-not-lighting gas igniter are different repairs.
- Open the oven enough to safely observe the top heating area without touching anything hot.
- On an electric oven, look for the oven broil element to glow evenly across its length.
- On a gas oven, look for the oven igniter to glow and listen for ignition at the broiler burner.
- Note whether you get no activity, partial glow, delayed ignition, or a brief start followed by shutdown.
Next move: If you clearly identify the pattern, you can stop guessing and focus on the right component. If you cannot safely observe the broil area or the behavior is erratic, skip deeper diagnosis and arrange service.
What to conclude: No glow on electric points toward the oven broil element or its circuit. Glow without ignition on gas strongly points to a weak oven igniter. Brief operation then shutdown leans toward sensing or control.
Step 3: Inspect the broil heating area for obvious physical failure
A quick visual check often confirms the most common repair without tearing the oven apart.
- Turn power off to the oven before touching or inspecting inside the cavity closely.
- On an electric oven, inspect the oven broil element for blisters, cracks, burn-through, sagging, or a section that never glowed.
- On a gas oven, inspect the visible igniter area for heavy damage or a chalky, crumbling igniter body if accessible from inside the oven cavity.
- Check the oven door seal for major gaps or tears that could dump heat and make broil seem weak, though that is usually secondary rather than the main failure.
Next move: If you find a damaged oven broil element or a clearly deteriorated oven igniter, that is a solid repair path. If nothing looks damaged, keep going before buying parts. Plenty of failed elements and sensors look normal.
Step 4: Use the heating pattern to choose the most likely part
By this point, the failure pattern usually points to one main part instead of a pile of guesses.
- If you have an electric oven and the broil element stays dark or only one section heats, treat the oven broil element as the leading failure.
- If you have a gas oven and the igniter glows but the broiler burner does not light reliably, treat the oven igniter as the leading failure.
- If the broiler starts but shuts off too early, or both broil and bake temperatures seem off, move the oven temperature sensor up the list.
- If the control panel is also glitchy, unresponsive, or showing broader oven problems, stop short of ordering electronics until the simpler heating and sensor checks are ruled out.
Next move: If one pattern matches cleanly, you can move ahead with that repair instead of chasing the control first. If the symptoms do not match any one pattern, professional diagnosis is the safer next move.
Step 5: Repair the confirmed part or call for service before going deeper
Once the pattern is clear, the best next step is a targeted repair. If it is not clear, deeper electrical diagnosis is where DIY risk rises.
- Replace the oven broil element if an electric broiler stays dark, heats unevenly, or shows visible burn-through.
- Replace the oven igniter if a gas broiler glows but will not light the burner reliably or takes too long to ignite.
- Replace the oven temperature sensor if broil starts and quits early and the oven also shows temperature control problems.
- If none of those fit cleanly, schedule service for live electrical or control diagnosis instead of guessing on a control board.
A good result: If the broiler now glows or ignites quickly and gives steady top heat, run a short cooking test and recheck browning performance.
If not: If the new part does not change the symptom, stop and have the oven professionally diagnosed for wiring, relay, or control trouble.
What to conclude: A successful targeted repair confirms the failure. No change after the right common part usually means the problem is farther upstream.
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FAQ
Why does my Bosch oven bake but not broil?
That usually points to the broil-side component rather than a total oven failure. On an electric oven, the oven broil element is the first suspect. On a gas oven, a weak oven igniter is very common.
Can a bad oven temperature sensor stop broil from working?
Yes. If the sensor reads wrong, the oven can shut the broiler down too early or behave erratically. This is more likely when broil starts but does not stay on long enough and bake temperatures also seem off.
How do I know if the oven broil element is bad?
The strongest clues are no glow, only part of the element glowing, visible blistering, a crack, or a burned-through spot. A normal-looking element can still fail, but visible damage is a strong confirmation.
Why does the gas broiler igniter glow but not light the burner?
A glowing igniter can still be too weak to open the gas valve properly. That is a classic gas-oven broiler failure. If it glows but the burner does not light reliably, the oven igniter is usually the right fix.
Should I replace the control board if the broiler is not working?
Not first. Control problems do happen, but they are not the common starting point for a broil-only failure. Rule out the oven broil element, oven igniter, and oven temperature sensor before spending money on electronics.