ErrorCodeDoctor
LG · Range (Gas)

LG Range (Gas) F9 error code

Difficulty: Hard · Cost: $80–$250 · Duration: 5m

The F9 error means your LG range detected that the upper oven is not reaching or maintaining the correct temperature during operation. This is similar to the F6 error but represents a different heating fault condition in the upper oven. It can be caused by a faulty heating element, a damaged bake or broil element, or a control board issue. A reset clears it in some cases but if F9 keeps returning the heating components will need to be inspected and replaced by a technician.

Common causes

  • Upper oven heating element has malfunctioned or is not generating enough heat
  • Bake or broil element is partially damaged reducing heating performance
  • Control board fault affecting the upper oven temperature regulation
  • Temporary electronic glitch causing a false heating error

How to fix it

  1. 1

    Press the CLEAR/OFF key to clear the error and try the original function again

  2. 2

    If F9 reappears turn off the circuit breaker for the range and wait 30 seconds

  3. 3

    Turn the circuit breaker back on and check if the error has cleared

  4. 4

    If F9 persists after resetting the upper oven heating element needs inspection and replacement by a qualified technician

Related LG Range (Gas) error codes

1

HS

The cooktop surface temperature is above 150°F — too hot to touch

easy
2

H5

The cooktop surface temperature is above 150°F — too hot to touch

easy
3

PF

Power to the range was interrupted

easy
4

Sb

Sabbath mode is active — temperature control, timer, light, and alarm functions are disabled

easy

F9 error — frequently asked questions

What does the F9 error mean on a LG range (gas)?

The upper oven is not heating properly

What causes the F9 error?

The F9 error is usually caused by: Upper oven heating element has malfunctioned or is not generating enough heat; Bake or broil element is partially damaged reducing heating performance; Control board fault affecting the upper oven temperature regulation; Temporary electronic glitch causing a false heating error.

Can I fix the F9 error myself?

This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.

How much does it cost to fix the F9 error?

Fixing the F9 error on a LG range (gas) typically costs $80–$250, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my range (gas) with the F9 error?

We'd recommend addressing the F9 error before continuing to use the range (gas), since hard-rated issues often involve a real fault rather than a minor glitch.