If your Bosch gas hob is silent when you turn the knob, first ensure the burner heads are dry and free of debris. Most often, moisture from cleaning or a failed spark module is the culprit behind the lack of clicking.
A silent Bosch hob is usually one of three things: moisture shorting out the electrode after a cleaning session, a dead spark module, or a tripped GFI outlet nobody noticed. If only one burner's quiet, check that ceramic insulator for cracks first. If all of them went silent at once, you're probably looking at the spark module or a power issue. Don't ignore this long-term because lighting burners with a match every time is annoying and not exactly safe.
Here's the deal with Bosch hobs: the clicking happens because the spark module shoots high voltage to the electrode, and that electricity jumps the gap to light your gas. When it stops, something broke that electrical path. It's way more common than people think, and honestly most of the time it's not that expensive to fix. Most repairs land between 80 and 200 dollars depending on whether it's just moisture or an actual dead module.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Moisture from cleaning55%
Failed spark module25%
Broken ignition switch15%
Wiring issues5%
Symptoms You May Notice
You turn the knob and hear absolutely nothing, not even a faint tick. Just gas hissing out into silence.
The gas is flowing fine, you can actually smell it, but there's zero spark visible at the electrode tip when you turn the knob.
Only certain burners click while one or two are completely dead, which usually means those specific electrodes or switches are the problem rather than the whole module.
Clicking starts when you push the knob in but cuts out before the burner catches, leaving you turning and holding the knob hoping something happens.
All four or five burners stopped clicking at the exact same time, which almost always points to the spark module or a power supply problem rather than individual electrode issues.
Can you reset a Bosch oven to clear the NO-CLICK-IGNITION code?
There's no button sequence for Bosch hob ignition resets. What you do is cut power at the breaker for a full 60 seconds, then restore it. If you fixed whatever caused the no-click condition, the ignition system comes back online on its own. Restore power, wait 30 seconds, then test each burner knob one at a time to confirm clicking is back.
Tools Required for Diagnosis
Phillips #2 screwdriverTorx T20 screwdriverNeedle nose pliersHairdryerContact cleaner sprayMultimeter with AC voltage settingPhone flashlight or small inspection lightDry toothbrush
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
ComponentComponent Under Test
Expected Range110–125 VAC
ConditionIf Open (OL) or infinite, replace component.
Frequently Asked Questions
Can I still light my Bosch gas hob with a match?
Yeah, absolutely. Grab a long match or a wand lighter and turn the knob to the lite position, then bring the flame right to the edge of the burner before you let much gas flow. Don't let gas build up first. This is a totally fine temporary fix while you're waiting on parts, but honestly, manually lighting a burner every single time is annoying enough that most people get it fixed pretty quick. Just don't do it if you're already smelling gas in the kitchen before you even turn the knob. That's a different problem.
Why does my hob click once and then stop?
That's almost always a weak spark module or a dirty ground connection on the electrode. Bosch igniters are supposed to rapid-fire click until the flame catches and the system senses it's lit. If the module's starting to fail, it might have just enough juice for one pop but can't sustain the fast-clicking rhythm needed to actually ignite the burner. Try cleaning the electrode tip with a dry toothbrush first and see if that helps. If not, the module's on its way out. Better to replace it before it fails completely rather than dealing with one-click ignition every morning.
Will a spill damage the ignition system permanently?
Usually not, but it depends on what spilled. Plain water? Let it dry out 24 to 48 hours and you're probably fine. Sugary stuff like juice, pasta water with starch, or anything sticky? That's worse because it leaves residue even after drying. That residue corrodes switch contacts and gums up the electrode socket. If you had a sugary spill, dry everything thoroughly then spray the igniter and socket with contact cleaner. That'll dissolve the residue. If clicking still doesn't come back after that, the switch contacts are probably corroded enough to need replacing.
How much does it cost to replace a Bosch spark module?
The part itself runs 80 to 150 bucks depending on the model. Had a NGM8055UC in last week where the module was 95 dollars from an online parts supplier. With a tech's labor you're probably looking at 200 to 300 total for a professional repair. Honestly it's one of the more straightforward fixes on these cooktops once you've got the top off. If you're comfortable with basic appliance repair, a spark module swap is a realistic DIY job. Just kill the power at the breaker, document your wire connections before unplugging anything, and you'll be fine.
How do I know if it's the module or just one bad electrode?
Easy way to tell. If only one or two burners are silent and the rest click fine, it's almost definitely the electrode or switch on that specific burner, not the module. The module feeds all the burners from one unit, so when it dies, they all go silent at once. One dead burner equals one bad component. All dead burners at the exact same time equals either the module or a power supply problem. That one distinction alone saves a lot of unnecessary parts buying, so check how many burners are affected before you order anything.
Models Known to Experience NO-CLICK-IGNITION Errors
This repair applies to most Bosch ovens with this error code. Common model numbers include: