F8 Minor Easy DIY

LG Oven F8 — Meat probe error

LG Oven · Error code F8

What F8 Means

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.

Symptoms

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

Common Causes

1
Damaged meat probe

Probe cable kinked or the tip element open after repeated use.

2
Probe jack contaminated

Grease or food in the cavity-wall jack prevents a clean contact.

3
Probe left plugged in when not in use

Some models throw F8 if a probe is detected at idle and reads wrong.

4
Failed probe jack/receptacle on the cavity wall

Pins corroded or wiring open.

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.

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.

Common replacement LG oven meat probe View on Amazon→ Common replacement LG meat probe receptacle View on 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 — Right-rear cooktop sensor open/short F1 Range F1 — Upper Oven Thermistor Error

All LG codes → All oven codes →

Verified against manufacturer documentation: lg.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.