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LG Oven Error Code F19

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 14, 2026
⚠ High Severity 🔧🔧 Moderate DIY

Temperature sensor error — sensor or wiring fault

The control detected the oven temperature sensor reading out of range — typically shorted, open, or with a damaged wiring run. On some LG models a stuck control key can also raise F19. The oven won't heat safely until the sensor circuit reads correctly.

💰 DIY cost: $25–$55 👨‍🔧 Pro cost: $150–$320 Save $125+ by doing it yourself
LG Oven error code F19 on the display panel
How the F19 code appears on a LG oven display

What Does Error Code F19 Mean on a LG Oven?

Temperature sensor error — sensor or wiring fault.

The control detected the oven temperature sensor reading out of range — typically shorted, open, or with a damaged wiring run. On some LG models a stuck control key can also raise F19. The oven won't heat safely until the sensor circuit reads correctly.

What Causes Error Code F19?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Temperature sensor short or open 55% of cases
  2. 2
    Sensor wiring harness damaged 25% of cases
  3. 3
    Stuck control key 10% of cases
  4. 4
    Control board sensor input fault 10% of cases

How to Fix LG Oven Error Code F19

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Power cycle

    Turn off the breaker for 5 minutes, then retry.

  2. 2

    Check for a stuck key

    Press each control-panel button to confirm none is sticking.

  3. 3

    Test the sensor

    At room temperature, ~1,080 ohms. Near 0 = shorted, OL = open. Replace if out of spec.

    🔩 Multimeter 🔩 LG oven temperature sensor ($25–$55)
    ⚠️ Allow oven to cool before reaching inside.
  4. 4

    Inspect the wiring

    Trace the sensor harness for pinch points or chafing against the cavity.

How to Reset Error Code F19

Power off 5 minutes, then test the sensor. After replacing it, confirm with a 350°F bake cycle.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Did this guide fix your appliance?

When to Call a Professional

If a new sensor and clean wiring don't resolve F19, the control board sensor input has failed.

Average professional repair cost for this issue: $150–$320

Related Error Codes

F1
Oven temperature sensor open circuit
⚠ High Severity
F3
Oven temperature sensor short circuit
⚠ High Severity
F11
Heat error — oven failed to reach temperature in time
⚠ High Severity

Same Code on Other Brands

Error code F19 appears on these other brands too. See every brand that shows F19 →

Miele logo
Miele Washing Machine F19
Drain time exceeded — slow or failed drain

Find Replacement Parts

Use these links to find the exact replacement parts for your LG Oven:

🔩
Search PartSelect
LG Oven repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More LG Oven Error Codes

HS Hot Surface indicator — surface still hot (not a fault) PF Power failure — unit lost power during operation (not a fault) Sb Sabbath Mode active — controls intentionally disabled (not a fault) F2 Oven over-temperature — exceeded maximum safe temperature F5 Door latch failure during self-clean cycle F6 Door lock switch open — door latch not detecting locked position

Frequently Asked Questions

What does error code F19 mean on a LG Oven? +
Temperature sensor error — sensor or wiring fault
How do I fix error code F19 on my LG Oven? +
Start by Turn off the breaker for 5 minutes, then retry.. If that doesn't resolve it, work through each step in the fix guide above.
How do I clear or reset error code F19? +
Power off 5 minutes, then test the sensor. After replacing it, confirm with a 350°F bake cycle.
Is error code F19 serious? +
This is a high-severity error. You should address it soon. Running the appliance may cause further damage.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 14, 2026.

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