- “Clicks but does not catch”
- “Lights, then goes out when released”
- “A yellow or lifting flame”
Symptom
Bosch gas burner will not light
Igniters clicking without catching, a burner that lights and goes out, or a flame that has turned yellow. Whether it is one burner or every burner is the fastest diagnostic on this site.
- From $95 diagnostic, credited to the repair
- 59 cities and neighborhoods covered
- OEM parts available on order
- In writing the price, before anything is opened
Five ordinary causes
What this usually turns out to be
Cheapest and commonest first, which is also the order we check them in. They sit hundreds of dollars apart, and only the unit settles which one is yours.
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The burner cap out of position
A millimeter proud and the burner will not catch. The most common cause and it costs nothing — lift it, seat it square, try again.
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Blocked ports
A boil-over that dried in the holes around the burner. Clears with a pin or a stiff brush, cold and with the gas off.
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A wet or dirty electrode
After a spill or a clean. It sparks weakly or in the wrong place. Drying it and giving it a day often does it.
Gas burner & igniter repair from $145 -
The flame sensor
If the burner lights and goes out the moment you release the knob, the sensor is not confirming the flame — a safety device doing its job with a failing part.
Gas burner & igniter repair from $145 -
The ignition module or supply
When no burner will light. That is upstream and it is a real repair rather than a clean.
Gas burner & igniter repair from $145
In five minutes
Before you call anybody
None of it needs tools, and all of it makes the visit shorter.
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01
One burner or all of them?
The first question, and it removes most of the possibilities immediately.
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02
Lift the cap and reseat it
Cold, with the burner off. It should sit flat and square in its recess with no gap on one side.
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03
Look at the ports
The small holes around the burner ring. Anything baked into them stops the flame traveling around the ring.
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04
Dry everything and try tomorrow
If it started after a clean or a spill, give it a day. Moisture around the electrode is a real and common cause.
How it shows up
What people describe when they call
A shortcut
Narrow it down before anybody arrives
A description of the behaviour leaves a few possible causes. A code names the subsystem before anybody opens anything, which is why it is worth photographing before it clears.
If there is no code at all
The data plate is inside the cabinet, upper left wall or behind the grille. All models
In more detail
About Bosch gas burner will not light
The fastest diagnosis is the code
There is no code for this — gas burners do not report to a display. What replaces it is one question: is it one burner or all of them? One is that burner. All of them is upstream, at the module or the supply.
The fastest diagnostic there is
One burner misbehaving is that burner: the cap, the ports, the electrode. Every burner at once is upstream: the ignition module, the supply, or the power to the module. Establishing which takes seconds and it decides everything after it.
What you can safely do yourself
With the burners off and completely cold: lift the cap, check it sits flat and square, and look at the ports for anything baked into them. That is the whole home-repairable list, and it is behind a surprising share of these calls.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards
Before you book
Questions about bosch gas burner will not light
All the igniters click when I light one.
Normal on many of these — one module sparks every electrode. What is not normal is clicking that carries on after the burner has lit, which usually means a wet or dirty electrode.
It lights but goes out when I let go of the knob.
The flame sensor is not confirming the flame. It is a safety device behaving correctly with a failing component, and it is a known repair.
The flame is yellow.
Worth acting on — it points at air, pressure or a partly blocked burner. Not an emergency today, but the cheapest moment to fix it is now.
Where we do it
Across Miami-Dade, Broward, and Palm Beach
Same terms everywhere we go: an on-site diagnostic first, the price agreed in writing, and the exact figure confirmed once we have seen the unit.
Neighborhoods people ask for by name