Which part is usually at fault for LG error F9?

The most commonly implicated component is the heating system.

What is the first thing to try for LG error F9?

Press Clear/Off and retry; if the oven still fails to heat, cycle the breaker and request service.

Error F9 Stops machine US market

F9 on a LG oven / range usually means: The upper oven is not heating properly. On a LG Oven / Range, code F9 points to the heating system.

Fix it fast: Clear and reset. Full ranked steps below.

Manufacturer source Updated Oct 17, 2026 View source

Try these in order. Stop when the code clears.

1 Clear and reset
Easy
- Press Clear/Off and retry; if the oven still fails to heat, cycle the breaker and request service.
Source

A griddle heating error was detected. On a LG Oven / Range, code F56 points to the griddle element.

An upper oven heating error was detected. On a LG Oven / Range, code F6 points to the heating element.

The sous vide function is not heating properly. On a LG Oven / Range, code F69 points to the sous vide element.

F5 indicates a Lower Oven Thermistor Error. On a LG Oven / Range, code F5 points to the thermistor.

F19 indicates an Oven Heating Error. On a LG Oven / Range, code F19 points to the thermistor.

F34 indicates a Front Induction Burner Temperature Sensor Error. On a LG Oven / Range, code F34 points to the thermistor.

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