LG Oven Error F8
⚡ Quick Answer: The LG oven F8 error code signals a malfunction in the temperature sensor circuit, specifically related to the upper/right probe. This can lead to err... ⚠️ Difficulty Varies
What Does Error F8 Mean?
The LG oven F8 error code signals a malfunction in the temperature sensor circuit, specifically related to the upper/right probe. This can lead to erratic temperature readings, causing your oven to refuse heating or disrupt cooking cycles. The issue may arise from a shorted or defective probe sensor or wiring problems between the sensor and control board. Proper diagnostics and repairs are essential for consistent cooking results.
Common Symptoms:
- Oven displays F8 on the control panel
- Oven may refuse to heat or start cooking cycles
- Error appears shortly after starting a cooking/preheat cycle
Possible Causes
- Shorted or defective oven probe sensor (upper/right probe) (medium)
- Wiring issue between the probe and control board (medium)
How to Fix Error F8
DIY Fix Basic User Checks & Reset
- Turn the oven off and disconnect it from power (unplug or turn off circuit breaker).
- Wait a few minutes to allow the control board to reset.
- Ensure any meat probe accessory is fully inserted correctly and undamaged.
- Reconnect power and see if the error persists.
Technician Only Inspect/Replace Probe Sensor and Wiring
- With power disconnected, access the internal probe sensor wiring and connector.
- Visually inspect for signs of burning, loose connections, or damaged insulation.
- Test the probe sensor resistance using a multimeter to check for shorts or out‑of‑range values.
- Replace the probe sensor if defective.
- Repair or replace any damaged wiring between probe and control board.
Parts needed: Oven probe sensor (upper/right probe), Sensor harness/wiring
- If error persists after basic reset and inspection of probe and wiring
- If internal wiring appears damaged or burnt
- If oven components beyond user‑removable parts are suspected
Next step
Choose the next step for F8
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Model-compatible Oven parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Non-Scratch Cooktop Cleaner
A routine surface-care product. Confirm that it is approved for the specific glass, ceramic, enamel, or stainless finish.
Oven Thermometer
A diagnostic aid for comparing cavity temperature during a controlled check. It does not prove which internal component has failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
Common Questions
What does F8 error mean on LG oven?
The F8 error indicates a malfunction in the temperature probe circuit, causing erratic heating.
Can I fix LG oven F8 error myself?
Yes, you can try resetting the oven and checking the probe for damage.
How much does it cost to fix F8 error?
Repair costs range from ¥3,000 to ¥12,000, depending on parts and labor.
When should I call a technician for F8?
Contact a technician if the error persists after a reset or if you notice damaged wiring.
Data last verified: 2026-07-31
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