LG Oven Error Code F-3: How to Fix It

Q: What causes LG oven F-3 error code?

F-3 error occurs when the oven temperature sensor is open circuit (broken internal wire), shorted (wires touching), or has a loose connection. Heat exposure over time commonly causes sensor failure.

Q: Can I still use my LG oven with F-3 error?

No, you should not use the oven with F-3 error. The oven cannot accurately control temperature without a working sensor, which could lead to undercooked food or overheating hazards.

Q: How much does LG oven temperature sensor cost?

OEM LG oven temperature sensors typically cost $25-50, while compatible aftermarket sensors range from $15-35. Installation by a technician adds $100-150 in labor costs.

Q: How do I test LG oven temperature sensor?

Disconnect the sensor wires and use a multimeter set to ohms. At room temperature (70°F), a good sensor reads 1080-1090 ohms. Zero ohms indicates a short, infinite ohms indicates an open circuit.

Q: How long do LG oven temperature sensors last?

LG oven temperature sensors typically last 8-12 years with normal use. Frequent high-temperature cooking or self-cleaning cycles can shorten sensor lifespan due to heat stress.

Abstract

LG oven error code F-3 indicates a problem with the oven temperature sensor - it's either open circuit (broken wire) or shorted (wires touching). This sensor monitors your oven's internal temperature and sends readings to the control board, so when it fails, your oven can't heat properly or maintain accurate temperatures.