What does LG Oven F6 Error Code - Causes & Fix mean?

F6 means the upper oven ran too hot, often past 650F outside self clean. The usual fix is replacing the oven temperature sensor.

How do I fix LG Oven F6 Error Code - Causes & Fix?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with F6 active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for LG Oven F6 Error Code - Causes & Fix?

The most frequently replaced parts for LG Oven F6 Error Code - Causes & Fix are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is LG Oven F6 Error Code - Causes & Fix a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

LG Oven F6 Error Code - Causes & Fix

LG Oven F6 Error Code — What It Means

The F6 code is an upper oven heating fault that trips when the cavity reads far too hot, typically above 650 degrees while not in a self clean cycle. The control shuts heating down to protect the oven.

The two common drivers are a sensor feeding the board a false low reading so it keeps heating, or a stuck relay holding the element on. Either way the oven overheats and reports F6.

Jump to Fix

Common Causes

Drifting temperature sensor A sensor reading low makes the control overheat the cavity chasing a setpoint.
Stuck heating relay A welded relay on the control board keeps the element powered after it should cut off.
Shorted sensor wiring A pinched or melted wire can fool the board into running the element too long.
Failed control board A board that misreads temperature or mismanages the relay can drive an overheat.
Sensor mounting problem A loose or displaced sensor probe gives the board a wrong cavity temperature.

Step-by-Step Fix

Press CLEAR/OFF, let the oven cool fully, then retry a bake cycle.
If F6 returns, kill power at the breaker for 30 seconds and restore it.
Pull the range and test the oven temperature sensor for the correct resistance.
Replace the sensor if it reads off about 1080 to 1100 ohms at room temperature.
Inspect the bake and broil element wiring for melted or shorted spots.
If the element stays powered with the oven off, suspect a stuck board relay and replace the board.
Restore power and watch a full preheat to confirm the oven holds temperature.

Parts Often Needed

Part	Notes
LG oven temperature sensor	Amazon \| Match the probe and plug to your model number.
Range main control board (relay board)	Amazon \| Replace if a relay stays closed and keeps the element on.
Oven sensor harness	Amazon \| Order if the sensor wiring shows shorting or heat damage.

When to Call a Pro

Call a pro if the element stays hot with the oven switched off, since a stuck relay can keep heating even after a reset. An oven that overheats is a burn and fire concern, so do not keep running it while you wait.