LG · Oven Minor

F8 — Meat probe error

The control detects an open or shorted meat-probe circuit, or a probe inserted but reading an impossible value. The oven cannot run a probe cook cycle until cleared.

Keep using it?
Yes — fix when convenient
DIY difficulty
Easy
Verified against
lg.com ↗

How to fix it

  1. Unplug the meat probe from the cavity-wall jack.
  2. Press CLEAR/OFF and retry the cook without the probe.
  3. Inspect the probe cable for kinks, melted insulation, or a loose plug.
  4. Clean the jack with a dry brush; do not get it wet.
  5. Try a known-good replacement probe.
  6. If F8 returns with no probe inserted, replace the probe receptacle/harness on the cavity wall.

Why it happens

Typical signs: F8 or F-8 on display · Probe-cook cycle will not start or cancels · Probe icon flashing · Standard bake still works in some cases

  • Damaged meat probe Probe cable kinked or the tip element open after repeated use.
  • Probe jack contaminated Grease or food in the cavity-wall jack prevents a clean contact.
  • Probe left plugged in when not in use Some models throw F8 if a probe is detected at idle and reads wrong.
  • Failed probe jack/receptacle on the cavity wall Pins corroded or wiring open.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • LG oven meat probe Common replacement
    Amazon →
  • LG meat probe receptacle Common replacement
    Amazon →

More LG oven codes

5b 5b — Sabbath Mode active (not a fault) CF1 CF1 — Left-front cooktop sensor open/short CF2 CF2 — Left-rear cooktop sensor open/short CF3 CF3 — Right-front cooktop sensor open/short CF4 CF4 — Rear Cooktop Sensor Error (Zone Varies by Model) F1 Range F1 — Upper Oven Thermistor Error

All LG codes → All oven codes →

Frequently asked questions

What does the F8 code mean on a LG oven?

The control detects an open or shorted meat-probe circuit, or a probe inserted but reading an impossible value. The oven cannot run a probe cook cycle until cleared.

What causes the F8 code on a LG oven?

Damaged meat probe: Probe cable kinked or the tip element open after repeated use. Probe jack contaminated: Grease or food in the cavity-wall jack prevents a clean contact. Probe left plugged in when not in use: Some models throw F8 if a probe is detected at idle and reads wrong.

Is it safe to keep using a LG oven with a F8 error?

Yes — fix when convenient. This is rated a minor-severity fault.

How do I fix F8 on a LG oven?

Unplug the meat probe from the cavity-wall jack. Press CLEAR/OFF and retry the cook without the probe. Inspect the probe cable for kinks, melted insulation, or a loose plug.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: lg.com.