GE Oven F3 Error Code: Open Temperature Sensor Fix

Quick Answer

An F3 code on a GE oven indicates a failed oven temperature sensor probe. You can verify this by testing the sensor with a multimeter. It should read approximately 1,100 ohms at room temperature.

I've seen this code on probably a hundred GE ranges at this point, and it's almost always the probe itself. Here's what worries me when people ignore it: the oven just won't heat at all. It's not dangerous, but you also won't cook dinner. And if you keep resetting it hoping it goes away, it won't. The fix is usually a $20 part and half an hour of your time.

GeOvenSeverity: high82% DIY Success

Time to Fix

20–45 min

Difficulty

beginner

Parts Cost

$20 – $280

Tools Needed

Multimeter (ohm mode), Phillips screwdriver

What Does the F3 Code Mean?

When I see F3 on a GE display, I'm looking for a break in the electrical path. Unlike an F2 code which usually means the oven's running away with heat, F3 is the board saying it's lost its eyes entirely. It's a safety lockout that prevents the bake or broil elements from firing until the circuit's closed again. Usually a $20 part fixes the whole thing.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Defective Temperature Sensor Probe85%

Wiring Harness or Connector Issue10%

Main Control Board Failure5%

Symptoms You May Notice

F3 flashing on the control panel the second you try to turn the oven on, sometimes with that rapid beeping that won't quit until you hit Clear
Oven completely dead, no heat at all, elements won't even try to warm up because the board's locked them out as a safety measure
Error shows up even when the oven is stone cold and hasn't been used in hours, which tells you right away this isn't a runaway heat situation
Beeping and error come right back the second you restore power, no matter how many times you flip the breaker

Can you reset a Ge oven to clear the F3 code?

Hit the Clear or Off pad to stop the beeping. For a harder reset, flip the range circuit at the breaker off for 30 seconds then back on. But honestly, if that sensor's truly open, F3 is coming right back the moment the board wakes up and checks the circuit. The reset just buys you a few seconds of quiet. Fix the root cause and the code won't return.

Tools Required for Diagnosis

Multimeter (ohm mode)Phillips screwdriverNut driver (1/4")Flashlight

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

ComponentComponent Under Test

Expected Range1050–1100 ohms

ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
GE RTD Temperature SensorWB21X5243 · $20–$40	WB21X5243	$20 – $40
GE Oven Control BoardWB27T11311 · $150–$280	WB27T11311	$150 – $280

Frequently Asked Questions

What is the resistance spec for a GE oven temperature sensor?

GE sensors are really consistent. You want to see roughly 1080 ohms at room temperature, around 70°F. Anywhere between 1050 and 1100 is totally fine. If you're seeing something wild like 2500 ohms or an Open reading on your meter, that probe's done. Always test it cold, at actual room temp, before you decide to order a new one. Hot readings vary way too much to be reliable. If it reads normally cold but you're still getting F3, move on to the wiring harness.

Will a Frigidaire or Samsung temperature sensor work in a GE oven?

Don't do it. Even if it physically fits, the resistance curve is different and your oven'll be off by 50 degrees or more. Your baking will be a disaster and you won't even know why. Stick with WB21X5243 or a direct OEM equivalent. You can find them online for around $20-30 and the repair takes maybe 20 minutes once you've got the part. Saving $5 on a generic sensor isn't worth recalibrating your oven or ruining a roast.

Can GE oven F3 appear for any reason other than the temperature sensor?

It's rare but yeah, I've seen it. The main control board can fail on the sensor input circuit itself. But before you go down that road, check the harness thoroughly first. I've fixed probably three F3 calls in the last year just by reseating a connector that had vibrated loose at the board. A loose connector looks exactly like a dead sensor to the board. New sensor plus a close look at the wiring solves it 95% of the time. If you've replaced the sensor and confirmed the wiring's good, then start thinking board.

How much does it cost to fix a GE oven F3 error?

DIY route you're looking at $20-35 for the sensor probe, part number WB21X5243, and maybe 30 minutes of your time. If you call a tech, budget $150-250 total with the service call and labor. The control board is the expensive outcome if it comes to that, those run $200-400 depending on the model, plus labor on top. But seriously, check the sensor first. That's 90% of F3 calls right there and it's the cheapest possible fix by a mile.

Can I still use my oven while F3 is showing?

Nope. The board completely locks out the heating elements when F3 fires, that's the safety system doing exactly what it's supposed to do. It won't let the elements turn on without knowing the temperature inside the cavity. So the oven's dead until you fix it. The stovetop burners on most GE ranges should still work fine since they're on a separate circuit from the oven control. But if you need the oven for anything, get this fixed before you need it.

Related Ge Oven Error Codes

Code: HUBGE Oven Error Codes: Complete F-Code and Fault Reference Code: F20GE Oven F20 Error Code: Shorted Temperature Sensor Code: F2GE Oven F2 Error Code: Oven Temperature Runaway

Models Known to Experience F3 Errors

This repair applies to most Ge ovens with this error code. Common model numbers include:

JB735SPSS, JB645RKSS, JGS760SELSS, JB750SJSS, JB255DJBB, JB258DMWW, JKS5000SNSS

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on April 16, 2026