LG ovens and ranges flash an “F” code when something’s wrong. Here’s what each LG oven error code means, what to try first, and when to call a technician.

LG oven error codes at a glance

Codes vary by model — check your manual if yours isn’t listed.

The most common codes — and how to fix them

F9 — not heating

The oven failed to reach 150°F within five minutes. Try first: look inside — if the bottom bake element is cracked or blistered, that’s the culprit. A thermal fuse is the other common cause. See also oven repair.

F1 — temperature sensor

An upper-oven thermistor (temperature sensor) error. Try first: press Clear/Off, then reset at the breaker for 30 seconds. If it returns, the sensor needs replacing. See also oven temperature problems.

F3 — touchpad / sensor

A touchpad key or sensor error. Try first: a breaker reset for 30 seconds usually clears a one-off.

F19 — heating error (gas)

On gas double ovens, the oven struggled to reach temperature. Try first: Clear/Off and retry; if it persists, the igniter or gas supply needs checking.

A safety note: over-temperature codes (the oven running hotter than set) are a protective shutdown — don’t override them or force the oven back on. And with a gas range, if you ever smell gas, leave and call your gas company’s emergency line.

The bottom line

Most oven and range codes trace back to one part — a temperature sensor, a bake/broil element, a touchpad, or a door lock — and repairing is almost always cheaper than replacing. If a code won’t clear, we repair LG ranges (and every major brand) across DFW, usually same-day. Not sure yours is worth fixing? See our oven & range repair-or-replace guide.

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Oven temperature off? · Appliance repair FAQ