LG Oven / Range F3 error code
- Oven / Range
On LG oven / ranges, error F3 indicates: Oven thermistor error — temperature reading is out of range. Start with a 5-minute power reset at the breaker, then follow the oven / range-specific checks below before ordering replacement parts for F3.
Reviewed August 2025 · sources below
Safe to keep using?
Stop using
Severe overheating requires stopping use until the cause is identified.
- • Unplug the appliance before inspection.
- • Do not continue using the appliance until the cause is identified.
5 product recalls may apply
Brand-level matches — verify your model.
Show
5 product recalls may apply
Brand-level matches — verify your model.
- Notice
Triangle Tube Recalls Prestige and Aerco Esteem Gas Boilers Due to Carbon Monoxide (CO) Poisoning Hazard; Two Deaths Reported
Feb 2025 · Confirm your model
- Notice
LG Recalls Electric Ranges Due to Fire Hazard
Feb 2025 · Confirm your model
- Notice
Triangle Tube Recalls to Repair Gas Boilers Due to Risk of Carbon Monoxide Hazard; One Death Reported; In-Home Remedy May Be Delayed Due To COVID-19 Restrictions
Jul 2020 · Confirm your model
- Notice
LG Recalls Top-Loading Washing Machines Due to Risk of Injury
Dec 2012 · Confirm your model
- Notice
LG Electronics Recalls Electric Ranges Due to Burn and Fire Hazards
Nov 2012 · Confirm your model
Next step
Still seeing F3?
Show a photo or describe the symptom. Answer a few safety-first questions and see whether a part is needed.
Free guided checks · No account required · Don’t open live electrical, gas, or refrigerant equipment
How to fix F3
- Unplug the oven / range or turn off power at the breaker before inspecting any components.
- Reset LG F3: leave power off for 5 minutes, restore power, then restart. Confirm whether F3 returns.
- Check the most common cause for F3: Oven thermistor error — temperature reading is out of range.
- Inspect hoses, connections, and visible wiring for damage, clogs, or loose fittings.
- If a reset and basic checks don't clear the code, use our lookup tool for AI-powered diagnosis or contact a qualified technician.
- Reassemble, restore power, and run a test cycle. If F3 returns, the faulty component likely needs replacement.
Call a pro when: Call a technician if you smell burning, see sparking, hear grinding from the motor, or the code returns after replacing the suspected part.
What F3 means
Oven thermistor error — temperature reading is out of range.
Parts for this repair
We don't yet have a verified exact part number for this model. Search for a compatible Oven thermistor.
Check current price & availability
FixApplianceCode may earn a commission from qualifying purchases.
Likely causes
Many codes resolve with cleaning, resetting, or reconnecting.
Check: Power-cycle the appliance and check for obvious blockages or loose connections.
Est. cost: $0–$0
Wear or electrical failure of an internal part.
Check: If basic checks fail, the faulty component likely needs replacement.
Est. cost: $0–$100
Professional assistance recommended
This issue may be unsafe for DIY repair. Follow the safety guidance above and contact a qualified technician.
![[LG Ranges] Troubleshooting An F3 Error Code On An LG Range](/_next/image?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2F_-DmMf8hjjw%2Fhqdefault.jpg&w=3840&q=75)
Questions about F3
What does F3 error code mean on a LG oven / range?
Oven thermistor error — temperature reading is out of range.
How do I reset LG oven / range F3?
Unplug the oven / range or switch it off at the breaker for 5 minutes, then restore power and restart. A reset clears a stored F3 after a glitch, but the code will return if the underlying fault is still present.
What part do I need for LG F3?
Not always — some F3 errors are caused by user-fixable issues like clogs or unbalanced loads. Try the troubleshooting steps first.
Can I fix LG error F3 myself?
Many F3 errors can be fixed DIY if you're comfortable with basic tools. Start with the reset and steps above. If the issue involves electrical components or the code returns after replacing parts, call a professional.
Other LG Oven / Range codes
Prevent this problem next time
- Follow manufacturer maintenance schedule
- Address small issues before they worsen
Sources
Manufacturer meaning
Oven thermistor error — temperature reading is out of range.
FixApplianceCode guidance
Start with basic checks for LG F3 before ordering parts.
Source type: Part database
Source: ModelPartFinder + FixApplianceCode editorial
Last reviewed: 2026-10-23
Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
As an Amazon Associate I earn from qualifying purchases. Some links may also earn other retailer commissions, at no additional cost to you. Affiliate disclosure