LG Oven Error F5
⚡ Quick Answer: The LG oven F5 error indicates a malfunction in the temperature sensor, specifically a thermistor fault, which may detect a short circuit or an open c... ⚠️ Difficulty Varies
What Does Error F5 Mean?
The LG oven F5 error indicates a malfunction in the temperature sensor, specifically a thermistor fault, which may detect a short circuit or an open condition. This error often results in erratic temperature readings, causing inconsistent cooking results and may disable heating functions. The issue typically arises during preheat or cooking cycles, necessitating inspection of the temperature sensor and its wiring harness for faults.
Common Symptoms:
- Oven display shows F5 error code
- Oven may disable heating or normal operation when the code is present
- Occurs during or shortly after preheat or cooking cycles
Possible Causes
- Oven temperature sensor (thermistor) shorted (medium)
- Sensor wiring harness issue (open or short) (medium)
How to Fix Error F5
DIY Fix Basic power reset to clear transient faults
- Turn off the oven at the circuit breaker or unplug it.
- Wait at least 1–2 minutes to allow control board capacitors to discharge.
- Restore power and check if the F5 error reappears.
Technician Only Inspect and test temperature sensor and wiring
- Disconnect power to the oven at the breaker.
- Access and visually inspect the oven temperature sensor and associated wiring harness for signs of damage, corrosion, or loose connections.
- Use a multimeter to measure the sensor resistance at room temperature; compare to expected thermistor values.
- If the sensor reads out of range or is shorted, replace it with the correct OEM part.
- Verify wiring integrity; repair or replace if open or shorted.
- After repair, restore power and verify normal operation without F5.
Parts needed: Oven temperature sensor (thermistor), Wiring harness/connectors
- The F5 error persists after a power reset.
- You are uncomfortable performing electrical diagnostics on the oven.
- There is visible damage to wiring or the control board.
Next step
Choose the next step for F5
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.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
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 F5 error mean on LG oven?
The F5 error indicates a malfunction in the oven's temperature sensor, leading to erratic cooking temperatures.
Can I fix LG oven F5 error myself?
Yes, you can perform a basic power reset to clear transient faults before seeking further repairs.
How much does it cost to fix F5 error?
Repair costs range from $40–$150 for parts and $100–$300+ for technician labor, depending on your region.
When should I call a technician for F5?
Call a technician if the F5 error persists after a power reset, if you're uncomfortable with electrical diagnostics, or if there's visible damage.
Data last verified: 2026-07-31
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