Bosch
Weak Oven Igniter / Gas Valve Not Opening
Bosch gas oven will not heat; igniter glows but burner does not light or lights slowly.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Aged or weak hot surface igniter, Faulty oven gas safety valve, Low gas pressure, Poor electrical connection to igniter
How to Fix / Troubleshooting
Safety first: Turn off gas and power before replacing gas components. Do not attempt repairs if you smell strong gas; call a professional.
- Observe igniter: Start a bake cycle and watch the hot surface igniter. If it glows but the burner does not light within 60–90 seconds, the igniter is likely weak.
- Measure igniter current (advanced): Use a clamp meter to measure igniter current draw and compare to Bosch specs. Replace if low.
- Replace igniter: Disconnect power and gas, remove the oven bottom panel, and replace the bake igniter.
- Gas valve: If a new igniter does not resolve the issue, the oven gas valve may be faulty and should be replaced by a qualified technician.
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Repair Difficulty
Hard
4/5
Required Part
Oven Bake Igniter
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