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LG Oven Error Code F19

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: July 19, 2026
⚠ High Severity 🔧🔧 Moderate DIY

Temperature sensor error — sensor or wiring fault

The most common cause of the F19 error on a LG oven is temperature sensor short or open (~55% of cases); start with: power cycle.

💰 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.

F19 fires when the control board reads the oven's RTD temperature sensor outside its valid resistance window — effectively shorted (near 0 ohms), open (OL), or intermittent from a damaged harness. Because a safe bake requires reliable feedback, the control locks out heating until the circuit reads correctly. On some LG models a stuck control-panel key can also trigger F19. This distinguishes it from calibration or heating-element faults; F19 points specifically at the sensor input path.

Models affected: LG electric and gas ovens/ranges with an RTD temperature sensor, including models such as LREL6325F and LRGL5825F
What owners report: Owners commonly report F19 appearing at power-up or partway through a bake, sometimes after a self-clean cycle stresses the wiring. A simple power cycle occasionally clears a one-off glitch, and checking for a stuck button is a frequent quick win before pulling the sensor.

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.

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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

Can I keep using my LG Oven when error F19 appears? +
It is not advisable. The oven may still power on, but running it while F19 is active can worsen the sensor fault or damage related parts. Treat it as a soon-as-possible repair.
What most commonly causes F19 on a LG Oven? +
Across reported LG oven repairs, the most frequent is temperature sensor short or open (55% of cases), sensor wiring harness damaged (25%), then stuck control key (10%). Check them in that order before replacing any parts.
F19 keeps coming back after a reset — what should I check next? +
A reset only clears the stored F19 fault; if it returns, the sensor problem is still present. Move on to the physical checks — power cycle, then check for a stuck key — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.
How much does it cost to fix LG Oven error F19? +
A DIY repair typically runs $25–$55 in parts, versus $150–$320 for a professional service call, so handling it yourself saves around $125. Expect the work to take roughly 30–60 minutes.
Which LG Oven models show error F19? +
F19 is documented on LG electric and gas ovens/ranges with an RTD temperature sensor, including models such as LREL6325F and LRGL5825F. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: July 19, 2026.

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