Why won’t my oven turn on? Causes and fixes
An oven that won’t turn on is most often caused by a failed bake element (electric), a weak igniter (gas), or a power problem - electric ovens can lose one leg of the double breaker. A blown thermal fuse or a locked door after self-clean produces a dead oven. If the cooktop works, focus on the element, igniter, and control. Identify your model number to order the correct replacement parts.
Need step-by-step instructions for your specific brand and model? Visit our DIY Repair Guide and filter by appliance and brand.
Safety information
Disconnect power before testing elements, fuses, or the sensor - electric ovens operate at 240 volts, and gas oven igniter circuits run on household power. On gas ovens, never bypass or jumper the igniter or safety valve; the weak-igniter design is itself the safety mechanism that prevents unburned gas release. If you smell gas at any point, stop work, leave the area, and contact your gas utility.
Most common causes
- Failed bake element (electric) — the element burns open, often with a visible blister or break, and the oven never heats.
- Weak or failed igniter (gas) — the igniter glows but never draws enough current to open the gas valve, so the burner never lights.
- Lost power leg or tripped breaker — electric ovens need both 120-volt legs; losing one leaves lights and controls alive but no heat.
- Blown thermal fuse — a heat event, often during self-clean, opens the fuse and disables the oven.
- Door lock stuck engaged — a self-clean latch that never released keeps the control from starting a bake cycle.
- Failed oven control board or selector switch — the control never energizes the bake circuit despite good elements and power.
Step-by-step diagnosis
- Check the breaker and power first. Cycle the oven’s double breaker fully off and on - one leg can drop while the handle looks normal, leaving a display that works and an oven that won’t heat. For gas ranges, confirm the range is plugged in; the igniter runs on household power.
- Check the door lock. If the display shows a lock icon or the door won’t open after a self-clean cycle, run a short self-clean and cancel it after 60 seconds, or power-cycle the oven - either usually releases a stuck latch. A latch motor that never releases needs replacement.
- Inspect the bake element on electric ovens. Look for blisters, breaks, or a burned spot, then disconnect power and test resistance - roughly 20-40 ohms is typical, and an open reading confirms failure. Replace the element; it mounts with two screws and two spade terminals.
- Watch the igniter on gas ovens. Set a bake temperature and observe through the broiler or bottom access: the igniter should glow bright orange and the burner should light within about 90 seconds. An igniter that glows without ignition is weak - it isn’t drawing enough current to open the safety valve. Replace it.
- Test the thermal fuse with power disconnected. The fuse typically mounts at the rear of the cavity or on the control housing. No continuity means it has opened - replace it, and note that self-clean cycles are the classic trigger.
- Verify the temperature sensor circuit. Some controls refuse to start a cycle with an open sensor and display a fault code. Test the sensor’s room-temperature resistance (roughly 1,080-1,100 ohms) and inspect its connector.
- Evaluate the oven control board or selector switch last. If elements, igniter, fuse, sensor, and power all test good, listen for the control’s relay click when starting a bake - silence means the board isn’t switching the bake circuit. Replace the control board or, on mechanical ranges, the selector switch.
Replacement parts to consider
Common parts for an oven that won’t heat: bake element, oven igniter, thermal fuse, door lock/latch assembly, oven temperature sensor, electronic oven control board, selector switch. Enter your oven’s model number on reliableparts.com for the exact parts for your specific model.
Related FAQs
Why does my stove work but my oven doesn’t?
Working burners prove the range has power, so the fault is in the oven circuit: a failed bake element or igniter, a blown thermal fuse, a stuck door lock, or the oven control. On electric ranges, also cycle the breaker - the oven’s 240-volt heat circuit can lose a leg the 120-volt burner controls don’t use.
How do I know if my gas oven igniter is bad?
Watch it: a healthy igniter glows bright orange and the burner lights within roughly 90 seconds. An igniter that glows steadily but never produces flame has weakened - it no longer draws the current needed to open the gas safety valve. That glowing-but-no-flame pattern is the most common gas oven failure.
Why won’t my oven work after self-clean?
Self-clean runs the oven hotter than any other cycle, and two casualties are common: the thermal fuse blows, or the door latch sticks locked. Power-cycle the oven first to release the latch, then test the thermal fuse for continuity. Both parts are inexpensive; the labor is mostly access.
How much does it cost to fix an oven that won’t heat?
The common repairs are modest: a bake element typically runs $20-60, a gas igniter $40-100, and a thermal fuse $10-30, all DIY-accessible on most models. Control boards are the expensive case at $150-400. Professional repair for the common failures generally lands between $150 and $300.
Is it safe to use the cooktop if the oven is broken?
Generally yes - the cooktop and oven run on separate circuits within the range, and a failed element, igniter, or fuse in the oven doesn’t affect burner safety. The exceptions: any gas smell, a breaker that trips repeatedly, or burn marks and melted wiring, all of which warrant shutting the range down until repaired.
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