Fix a Cooktop That Won't Ignite

A cooktop that clicks but won't light is one of those kitchen failures that feels urgent because you can't cook. The good news: most of the time it's fixable in under an hour without calling a technician. The ignition system on a gas cooktop is relatively simple—an electrode creates a spark, that spark jumps to the burner cap, and the gas lights. When it stops working, something is blocking that chain: moisture, food debris, a loose connection, or occasionally a failed spark module. We'll walk through diagnosis and repair in the order that solves most problems fastest. If your cooktop is electric with a heating element, this guide doesn't apply—that's a different repair entirely. But if you hear clicking at the burner and see no flame, or if one burner works and another doesn't, you're in the right place.

1. Clear the Cooktop First. Lift off the metal grates above the burners and set them aside. Then gently lift each burner cap straight up—they're not usually bolted, just sitting on the electrode pin. Take a photo of each burner's position before removing caps so you remember which is which.
2. Find the Spark Source. Look at the small metal pin (the electrode) in the center of the burner opening where the cap sits. Use a damp cloth or soft brush to remove any food debris, grease buildup, or white mineral deposits around the electrode and in the opening. Don't submerge the electrode in water, but you can wipe it gently. Check that the electrode is straight and not bent or broken.
3. Scrub Away the Buildup. Soak the metal caps in hot soapy water for 5 minutes, then scrub away any burnt-on residue with a soft brush or cloth. Pay close attention to the small holes around the cap rim where gas exits—these need to be clear. Dry completely with a clean towel before reinstalling.
4. Watch for the Blue Spark. Place each cap back onto its electrode pin in the same position you removed it. The cap should sit flat and feel stable when you press gently. Reinstall the grates. Turn the ignition to the first burner that failed and listen for the clicking sound. You should hear a steady click-click-click and see a visible spark jumping from the electrode to the cap. If it ignites, you've solved it.
5. Eliminate Every Water Drop. If the burner still doesn't ignite after cleaning, lift the cap again and look for any pooling water around the electrode or in the burner opening. Even a small amount of moisture will prevent ignition. Use a clean, dry cloth to absorb any water you find. You can also use a hair dryer on low heat held 6 inches away for 30 seconds to dry the area completely.
6. Check the Hidden Wire. Look beneath or behind the cooktop where the burner connects to the main unit. You should see a thin wire running from the cooktop body to the electrode. Trace it with your finger to feel if the connection is tight. If it's loose, gently press it back onto the terminal. If the wire is cracked, kinked, or disconnected, it needs to be reseated or replaced—this requires removing the cooktop.
7. Test the Gas Line. If one burner won't light but others do, the igniter might be working but gas isn't reaching that burner. Try a different burner in the same position—if it lights, the problem is likely the gas valve or burner port, not the igniter. If no burners light, check that the cooktop's main gas valve is open and the gas supply itself isn't off at the meter.
8. Identify Module Failure. If you hear the clicking sound consistently but see no blue spark jumping to the cap even after cleaning and drying, the spark module (the electronic component creating the spark) has likely failed. At this point, the module needs replacement. This is a part that costs $40–$150 depending on the cooktop model, and installation requires removing the cooktop or accessing it from below.
9. Locate the Right Part. Locate your cooktop model number (usually on a label under the countertop or on the back panel) and search online for the spark igniter module. Verify it's the correct part before purchasing. If you're comfortable removing fasteners and disconnecting wires, you can do this yourself—if not, this is the point to call a technician, as it requires working inside the cooktop.
10. Cut Power First. Turn off the cooktop at the breaker or unplug it if it's electric-ignition (battery-ignition models don't need this). Wait 5 minutes for any residual power to dissipate. Then remove the fasteners holding the cooktop to the countertop or, if accessing from below, remove the screws holding the module bracket inside the unit. Gently pull the module out and disconnect the wire connector.
11. Swap and Verify. Connect the wire to the new module (it's keyed to fit only one way), then secure it back in place with the mounting bolt or clip. Restore power at the breaker, reinstall the grates and caps, and test the ignition. You should hear clicking immediately and see a spark when you turn the burner dial.