How do I fix error code F-2 on a LG ovens & ranges?

1. undefined: Unplug the unit. 2. undefined: Check if the sensor connector is disconnected or loose — check sensor connection and CN10 of Main PCB. If loose, reconnect; if harness is defective, replace or fix. 3. undefined: Measure resistance of thermistor at pins 5 and 6 of CN6 of Main PCB. Normal = approximately 1.09 kΩ at 25°C (77°F). If abnormal (shorted = near 0Ω), replace the defective thermistor. 4. undefined: If thermistor resistance is normal, plug in the unit and enter test mode (press any button with Mode knob in Off, then press '4' and '6' simultaneously for 1 second, then press '4' and '6' simultaneously for 1 second again). Check current temp display — normal thermistor value at room temp is 70°F to 90°F. 5. undefined: If thermistor value is normal in test mode, replace the Relay PCB. If problem persists after Relay PCB replacement, replace the Main PCB.

LG Ovens & Ranges

Error Code F-2

Shorted Sensor Error

Moderate

Address soon - your appliance may not work properly

Also displayed as: F-2

How to Fix

1
Unplug the unit.
2
Check if the sensor connector is disconnected or loose — check sensor connection and CN10 of Main PCB. If loose, reconnect; if harness is defective, replace or fix.
3
Measure resistance of thermistor at pins 5 and 6 of CN6 of Main PCB. Normal = approximately 1.09 kΩ at 25°C (77°F). If abnormal (shorted = near 0Ω), replace the defective thermistor.
4
If thermistor resistance is normal, plug in the unit and enter test mode (press any button with Mode knob in Off, then press '4' and '6' simultaneously for 1 second, then press '4' and '6' simultaneously for 1 second again). Check current temp display — normal thermistor value at room temp is 70°F to 90°F.
5
If thermistor value is normal in test mode, replace the Relay PCB. If problem persists after Relay PCB replacement, replace the Main PCB.