How to Fix Probe error — temperature probe issue on LG LSEL6335F (Electric Range)

Probe error — temperature probe issue

This step-by-step repair guide walks you through fixing probe error — temperature probe issue on your LG LSEL6335F (Electric Range). With the right tools and parts, most homeowners can complete this repair in 1–2 hours and avoid a costly service call.

Part of our Top 20 Oven Models & Common Repair Issues Guide. Browse all oven repair guides for related models and issues.

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Common Symptoms & Causes

The following symptoms typically indicate a temperature probe issue on your LG LSEL6335F electric range.

The oven display shows a “Probe” error message or F3 error code
Oven temperature readings are inaccurate or fluctuate unexpectedly during cooking
The oven shuts off mid-cycle without completing the set cook time
The oven fails to preheat or reaches temperature much slower than normal

These issues are most commonly caused by a faulty or damaged oven temperature probe, which can fail due to normal wear, physical damage from heavy cookware, or corrosion from grease buildup over time.

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Safety First

Unplug the oven from the power outlet before starting any repair — never work on a live appliance.
Wear work gloves when handling metal brackets, sheet metal edges, or sharp components.
Take photos with your phone before disconnecting any wiring harnesses or connectors.
Work in a well-lit area with enough floor space to lay removed panels flat.

Tools & Parts Needed

Essential Tools

Phillips #2 screwdriver
¼” nut driver
Multimeter
Work gloves (heat-rated)
Flashlight

Replacement Parts

Step-by-Step Repair Instructions

Step 1

Unplug the range from the wall outlet before doing anything else — working near oven wiring with power on is a shock hazard. Once power is off, locate the probe jack socket on the oven wall and clean its contacts thoroughly with a dry cotton swab. Grease and moisture buildup on those contacts creates a false resistance reading that triggers a probe error even when no probe is connected.

Step 2

With the range still unplugged, insert the meat probe into the jack and measure its resistance across the probe’s two-pin plug using a multimeter. At room temperature (around 70°F), a healthy thermistor-type probe reads approximately 1,000 ohms; a reading that is dramatically higher, lower, or completely open (OL) means the probe itself has failed and needs to be replaced. Pro tip: write down the exact reading before ordering a replacement so you can confirm the new probe matches.

Step 3

If the probe tests good, the fault may lie in the jack socket itself — the two-wire connector mounted inside the oven wall behind two Phillips screws. Remove the socket, then use your multimeter to check continuity between each jack pin and its corresponding terminal on the control board wiring harness. An open circuit anywhere along that path means the socket or its wiring has failed and must be replaced.

Step 4

A probe error that appears with no probe inserted at all points specifically to the jack socket failing in the open position, because the control board continuously monitors that circuit and flags an error when it sees no valid signal. This is an important distinction — it tells you the probe itself is probably fine and the socket is the culprit. Replace the jack socket to restore a proper signal path to the board.

Step 5

Before restoring power, reinstall the jack socket with its two Phillips screws and reconnect the wiring harness connector until it clicks firmly into place — a loose harness connection here will bring the error right back. Plug the range back in, insert the meat probe, and set the oven to bake at 350°F. Confirm that the probe temperature displays correctly on the control panel as the oven heats; the reading should climb steadily from room temperature.

Step 6

If the error code returns even after replacing both the probe and the jack socket, the control board’s input circuit for the probe has likely failed internally. At this stage, component-level board repair is rarely practical on this model, so replacing the control board is the correct next step. Before ordering, record the full model and serial number from the oven door frame to ensure you get the exact board revision that matches your unit.

Where to Buy Replacement Parts

Find genuine OEM and aftermarket replacement parts for your LG LSEL6335F (Electric Range) on Amazon:

When to Call a Professional

If the issue persists after completing all steps above, the problem may involve the sealed refrigerant system, a failed main control board, or wiring that requires specialized diagnostic equipment. Contact a licensed appliance technician — attempting sealed-system repairs without EPA 608 certification is illegal and unsafe.

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How Much Does This Repair Cost?

Replacing a temperature probe on the LG LSEL6335F yourself typically costs between $20 and $60 for the replacement part. A professional service call for the same repair usually runs $150 to $300, including labor and parts. Tackling this repair yourself can save you $100 or more.

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Frequently Asked Questions

What does a Probe error mean on my LG LSEL6335F?

A Probe error indicates that the oven’s temperature probe is either faulty, disconnected, or sending incorrect readings to the control board. You’ll need to inspect the probe and its connection before the oven can operate safely.

Can I still use my stovetop burners while the Probe error is displayed?

In most cases, the surface burners on the LG LSEL6335F remain functional even when a Probe error is active. However, the oven cavity will be disabled until the issue is resolved.

How do I reset the Probe error on my LG LSEL6335F?

Turn off the range at the circuit breaker for 30 seconds, then restore power to perform a soft reset. If the error returns, the temperature probe likely needs to be replaced.

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