LG Oven Won't Turn Off — DIY or Pro?

Safety and the right tools#

First, kill power at the breaker — on hardwired LG built-ins that's the only safe disconnect — and on a gas model close the gas valve; if you ever smell gas, leave and call the utility. LG panels use Torx fasteners rather than Phillips, so a set of T15, T20, and T25 drivers saves you stripped screws, and a multimeter is needed for the resistance checks.

The main causes#

• A welded control-board relay (most common). LG boards (EBR86433605 on the LRE/LSE series) use mechanical relays that can weld shut from a power surge, leaving the element powered no matter the command — a fire hazard, so disconnect power at once.
• A shorted temperature sensor. A sensor shorted to ground reads a false 0 ohms; the board reads that as extremely cold and calls for maximum heat indefinitely.
• A stuck touchpad key. Moisture or age can stick an LG touchpad key, which then sends a continuous heat command.

Reading the codes and testing#

Before you cut power, note the error code: F1 or F3 indicates a sensor fault, and F9 and F11 are the other codes commonly seen with this symptom. With power off, measure the temperature sensor's resistance — near 0 ohms confirms a short, and it's replaced before power goes back on. The parts most often replaced here are the control board (EBR86433605), the temperature sensor (MEA36701801), and the touchpad (EBR64624906); verify your serial-plate model before ordering, since LG part numbers shift between production years.

When to call a pro — and a holiday note#

If you can't confirm the fault, or the oven is hardwired, leave it powered off for a technician rather than restoring power to a possibly live element. As a rule of thumb, if the repair runs less than 50% of a new oven's cost and the unit is under 8 to 10 years old, repairing is the better call — and it's worth sorting before the oven carries heavy holiday baking. Book an EasyBear technician, who carries LG-specific tools and OEM parts, and keep the oven off until it's fixed.