Burner flame goes out on its own

Symptoms

• Flame lights normally then extinguishes within seconds
• Happens consistently on one burner
• You may need to hold the knob in longer than usual
• No draft or spill seems to be the cause

Likely causes

• CommonDirty or worn flame sensor/thermocoupleThis safety device shuts gas flow if it doesn't detect enough heat quickly enough.
• PossibleStrong draft blowing out the flameNearby fans, open windows, or a strong range hood can blow out a burner.
• PossibleWeak gas flow to that burnerA partially clogged burner can produce a flame too small to be detected properly.
• Less commonFaulty gas valve for that burnerThe valve may not stay open reliably.

What to do

1. Check for obvious drafts, like a window, fan, or the range hood on high, and reduce them.
2. Clean the burner cap and head as described in the burner-won't-light guide, since a weak flame from clogged ports can trigger the same shutoff.
3. Locate the flame sensor near the igniter (a small metal rod) and gently wipe it clean and dry.
4. Relight the burner and hold the knob at light for a few extra seconds after the flame appears, per your model's instructions.
5. If it still goes out on that burner specifically while others work fine, the sensor or valve for that burner likely needs professional service.
6. Avoid repeatedly forcing ignition attempts if gas smell builds up between tries.

Tools and parts

• Dry cloth

When to call a pro

If the flame keeps going out after cleaning, a technician can test and replace the flame sensor or valve.

Safety