Safety first: Turn all knobs to OFF. Disconnect the appliance from mains power to stop the clicking. Close the gas supply if you smell gas.

Dry the area: If the issue started after a spill or cleaning, remove the burner knobs and gently dry around the valve stems with a cloth. Allow several hours for moisture to evaporate.
Inspect switches: Lift the top panel (on ranges) to access the small ignition switches on each gas valve. Look for signs of water, corrosion, or broken switch bodies.
Test switches: With a multimeter, check each switch for continuity. It should be open when the knob is off and closed only when turned to ignite.
Replace faulty switch: Replace any switch that remains closed or behaves erratically.
Check wiring: Inspect ignition wires for damage or shorts to chassis. Repair or replace as needed.
Replace spark generator: If all switches are good but clicking continues when powered, the spark generator may be faulty and should be replaced.

Continuous clicking from igniters even when all burner knobs are off

Possible Causes