LG Oven Clicking but Won’t Light — What’s Happening
The clicking sound means your spark igniter is working and trying to start the burner, but the gas is either not flowing or not igniting. LG does not assign a single error code to this symptom. You may see it on a stovetop burner or inside the oven cavity during bake or broil.
For the oven bake burner, the most common scenario is a weak igniter that glows orange or white for a long time but never opens the gas safety valve. The igniter needs to draw enough current to prove it is hot before the valve releases gas. If it cannot pull that current, you get a glow and a click but no flame.
Most Likely Causes
- Weak or failed bake igniter The igniter glows but does not draw the roughly 3 amps needed to open the gas safety valve, so the burner never lights even after 90+ seconds.
- Burner cap or head not seated correctly On stovetop burners, a misaligned cap or head prevents the spark from reaching the gas and stops ignition.
- Moisture or debris around the burner Water, grease, or food particles on the burner cap, head, spark plug, or heat sensor short out the spark or block the gas flow.
- Clogged burner hole or nozzle A blocked orifice stops gas from reaching the ignition point even when the spark is present.
- Gas supply valve closed or gas interrupted If the shutoff valve behind the range is closed or your gas service is down, no burners will light.
- Loose or damaged spark wire A burned or disconnected wire to the spark electrode stops the spark from forming at the burner.
- Defective spark module The module that sends voltage to the spark electrode can fail, preventing any spark on the affected burners.
How to Diagnose and Fix
- Determine whether one burner or all burners and the oven are affected, since LG separates single-burner faults from whole-appliance gas supply problems.
- Check that the gas shutoff valve behind the range is fully open and that you have gas service to the home.
- If all burners fail to light, turn the gas valve off and on several times, wait a moment, and retry to clear any air in the line.
- For a stovetop burner, remove the burner cap and head, inspect for moisture or food debris, clean all surfaces, and reinstall the cap level and centered on the head.
- Check the burner hole or nozzle for blockage and clear it gently with a pin or compressed air if clogged.
- For an oven that won’t light, turn off the circuit breaker for 30 seconds to reset the control, then start a bake cycle and watch the igniter.
- Time how long the bake igniter glows before it either lights the burner or times out. LG considers 30 to 60 seconds normal, and anything over 90 seconds without flame indicates a weak igniter that must be replaced.
- Inspect the spark wire at the affected burner for looseness, cracks, or heat damage, and replace the wire if compromised.
Parts You Might Need
| Part | Notes |
|---|---|
| LG gas oven bake igniter | Amazon | Must draw around 3 amps to open the safety valve. Verify your model number before ordering. |
| Spark electrode wire | Amazon | High-voltage wire from the spark module to the burner. Replace if cracked or burned. |
| Spark module (ignition control) | Amazon | Supplies spark voltage to stovetop burners. Test before replacing if sparking is weak or absent. |
Related Error Codes
If your appliance also shows a code on the display, these match this problem:
- Lg Oven F1 error code
- Lg Oven F10 error code
- Lg Oven F11 error code
- Lg Oven F12 error code
- Lg Oven F17 error code
- Lg Oven F19 error code
- Lg Oven F2 error code
- Lg Oven F3 error code
- Lg Oven F4 error code
- Lg Oven F5 error code
- Lg Oven F6 error code
- Lg Oven F7 error code
When to Call a Pro
Call a pro if you are not comfortable working with gas connections or if basic cleaning and a circuit reset do not solve the problem. Replacing an oven igniter requires pulling the range out, accessing the burner box, disconnecting the old igniter, and confirming that the new part draws correct current before reassembly. If a new igniter still does not light the oven, a technician will need to test the gas valve, safety valve, and control board output to find the fault. Any work that involves disconnecting gas lines or testing live high-voltage spark circuits is best left to a qualified appliance technician. For gas line, burner, or igniter work, or if you ever smell gas, stop and call a licensed technician.