LG Oven Error Code F0 — Opened Sensor (Thermistor)
What this means
The F0 error code means the oven temperature sensor (thermistor) has remained in an open circuit state for over 1 minute during cooking. This prevents the oven from reading the internal temperature. Causes include a disconnected sensor wire, a broken thermistor, or corrosion on the sensor connector.
Step-by-step fix
3 stepsReset the oven
Turn off the circuit breaker for 30 seconds, then turn it back on. If the code was caused by a temporary glitch, this may resolve it.
Check sensor wiring
The oven temperature sensor is a thin metal probe inside the oven cavity (usually upper rear wall). Inspect the wire connector at the back of the oven for loose or corroded connections.
Test the sensor
Using a multimeter, measure the resistance across the sensor leads. At room temperature (70 degrees F), a typical LG oven sensor reads approximately 1080-1100 ohms. An open circuit (infinite resistance) confirms the sensor has failed.
When to call a professional
Sensor replacement is a common DIY repair, but if you are uncomfortable working with electrical components, call a technician.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.