On the covered LG range or oven, F8 means an Oven Meat Probe Error — LG's own wording. First, remove the probe and check whether the code appears without it fitted. Then: LG gives F8 the usual two steps: press CLEAR/OFF and retry, then turn the breaker off for 30 seconds if F8 appears again — LG's own sequence.
Differential
Likely causes of “LG range or oven code F8”, and how to tell them apart
- 1
A probe that is not seated in its jack
What separates it The code appears as soon as the probe is plugged in
How to confirm Unplug the probe and plug it in firmly, then check whether the code stays
- 2
A damaged probe cable or tip
What separates it Insulation is cracked or the tip is bent
How to confirm Look along the cable for kinks and burns, with the oven cool
- 3
A dirty or bent jack in the oven wall
What separates it The code appears with any probe
How to confirm Look into the jack with a flashlight for debris
- 4
A probe left in during self-clean
What separates it The code appears after a clean cycle
How to confirm Remove the probe before every self-clean
- 5
A control that misreads the probe
What separates it A known-good probe also gives the code
How to confirm A technician checks the input on the control
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the code appears with the probe unplugged
- Whether F8 or F18 shows
- Whether the probe was in during a clean
- Whether the cable looks damaged
Try in this order
0 of 11 completedWhat to do first
ReversibleRemove the probe and check whether the code appears without it fitted.
Correct only the documented fault domain
ReversibleLG gives F8 the usual two steps: press CLEAR/OFF and retry, then turn the breaker off for 30 seconds if F8 appears again — LG's own sequence.
Remove the probe
ReversibleUnplug the meat probe and see whether the code appears without it fitted.
Test with the probe unplugged
ReversibleRemove the probe and see whether F8 or F18 still appears; if it clears, the probe or its socket is the problem.
Check the probe plug and socket
ReversibleLook for a bent pin, food residue or damage on the probe plug and the socket, and clean them with a dry cloth.
Unplug the probe and retry
ReversibleRun an ordinary bake with the probe out; if the code is gone, the probe or its jack is at fault.
Inspect the probe
ReversibleLook at the full length of the cable and the tip for cracks, kinks, burn marks or a bent tip.
Seat it firmly
ReversiblePush the plug fully into the jack until it stops; a half-seated plug reads as a fault.
Check the jack
ReversibleWith the oven cold, shine a flashlight into the jack for debris and do not poke anything metal into it.
Keep it out of clean cycles
ReversibleThe probe is not made for self-clean heat and is often ruined by it.
Write down the sequence
ReversibleNote when the code appeared in relation to plugging the probe in.
Model-specific
What is true of this model and not of its siblings
- What the probe does
- It reads the food's internal temperature and tells the oven to stop.
- Care
- Store it away from the oven and wipe it clean.
- What LG says
- The reset sequence, then service if the code returns.
Stop boundary
When this stops being a self-service repair
- !Never use a damaged probe in a hot oven
- !If the code appears with no probe fitted, book service with the model number and the exact code
- !Stop using the probe until the code is explained
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. LG words F8 and F18 identically, so they share this page.
Exact questions
Common questions
What does F8 mean on a LG range or oven?+
an Oven Meat Probe Error — LG's own wording.
Can I cook without the probe?+
Usually yes, if the code clears without it.
Should I leave the probe in the oven?+
No; unplug and remove it when you are not using probe cooking, because heat can damage it.
Do I need the meat probe to use the oven?+
No. You can cook without it, and the code only matters when a probe is plugged in.
Where do I buy a replacement probe?+
LG sells probes by model number; use the model on the label inside the oven door frame to order the right one.
Which two codes does LG use for the meat probe error?+
LG words both as an oven meat probe error, so they share this page.
Why does it show with the probe unplugged?+
If it shows with nothing in the jack, the fault is in the jack or the control, and a technician should check it.
Can I buy a new probe?+
Probes are sold as spare parts for each model, and a new probe is the cheapest first test if the old one is damaged.
Can the probe stay in during a clean?+
No, remove it before any self-clean.