LG oven
LG oven error codes
Find LG oven and range error meanings with careful consumer-safe guidance for temperature, sensor, and control faults.
Errors
20
High severity
9
Browse all 20 oven codes
See the full LG oven error code list with code, meaning, severity, and direct links to the detail pages.
Common LG oven codes
F1
LG Oven Error F1: Upper Oven Thermistor Error — Open Circuit
The upper oven temperature sensor (thermistor) is reading an open circuit — its resistance is outside the valid range, meaning the oven cannot monitor temperature in the upper cavity.
Open F1 guide
F2
LG Oven Error F2: Upper Oven Thermistor Error — Overtemperature
The upper oven temperature sensor has detected a temperature that is dangerously high, or the sensor is reading a shorted condition that makes the oven's control board believe the temperature is above a safe threshold.
Open F2 guide
F3
LG Oven Error F3: Touch Pad or Key Sensor Error
The oven's control panel has detected a faulty key or touch sensor — a button is either stuck in a continuously pressed state, or a touch pad sensor is malfunctioning.
Open F3 guide
F4
LG Oven Error F4: Lower Oven Thermistor Error — Open Circuit
The lower oven cavity temperature sensor (thermistor) is reading an open circuit on double-oven models. The lower oven cannot monitor temperature and the lower cavity is disabled.
Open F4 guide
F5
LG Oven Error F5: Lower Oven Thermistor Error — Overtemperature
The lower oven temperature sensor is reading a shorted condition or the lower oven cavity has exceeded a safe operating temperature.
Open F5 guide
F6
LG Oven Error F6: Upper Oven Heating Error — Not Reaching Temperature
The upper oven is not reaching the set temperature within the expected time. The bake or broil heating element or its control circuit has failed.
Open F6 guide
Symptom entry points
Door, latch, and lock warnings
- F10 - The oven door lock mechanism has failed to operate correctly during a self-clean cycle attempt. The door is either not locking when commanded to or has locked and will not unlock.
- F19 - LG oven error F19 usually means the oven can heat up, but it is not maintaining the set temperature reliably.
- F20 - The oven door lock engaged correctly during a self-clean cycle but is now failing to release after the cycle has completed and the oven has cooled. The door remains locked even though the oven is cool.
Sensor and temperature faults
- F1 - The upper oven temperature sensor (thermistor) is reading an open circuit — its resistance is outside the valid range, meaning the oven cannot monitor temperature in the upper cavity.
- F2 - The upper oven temperature sensor has detected a temperature that is dangerously high, or the sensor is reading a shorted condition that makes the oven's control board believe the temperature is above a safe threshold.
- F3 - The oven's control panel has detected a faulty key or touch sensor — a button is either stuck in a continuously pressed state, or a touch pad sensor is malfunctioning.
Control board and electronics warnings
- F2 - The upper oven temperature sensor has detected a temperature that is dangerously high, or the sensor is reading a shorted condition that makes the oven's control board believe the temperature is above a safe threshold.
- F3 - The oven's control panel has detected a faulty key or touch sensor — a button is either stuck in a continuously pressed state, or a touch pad sensor is malfunctioning.
- F5 - The lower oven temperature sensor is reading a shorted condition or the lower oven cavity has exceeded a safe operating temperature.
Model-family guidance
What can vary by model
- LG oven display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
- LG oven temperature-sensor layouts vary by cavity and range family, but F16 still points first to the sensor path.
- This is different from a true overheating code, so compare F2 instead if the oven appears to be running dangerously hot.
Frequently asked questions
Appliance-level FAQs add supporting context without forcing users into long-form content.
Where should I start with LG oven error codes?
Start with the oven overview page, then use the full error code list or open the code that matches your display. Each page gives a quick meaning, safe checks, and escalation guidance.
Are all LG oven codes the same across models?
Not always. Meanings can vary by series or model, so the guidance here stays conservative and recommends checking the manual for model-specific wording.
When should I stop troubleshooting and contact support?
If the same warning returns, the appliance is leaking, will not run safely, or the next step would require invasive work, it is best to turn it off and contact LG support or a qualified technician.
Which oven codes are covered in this section?
This LG oven section currently includes F1, F2, F3, F4, F5, F6, F7, F9, F10, F11, F16, F17, F18, F19, F20, F27, F38, F42, H5, PF and related variants based on the current content set.