How to Fix Electric oven F3E2 error on KitchenAid KSDB900ESS (Dual Fuel)

Electric oven F3E2 error

This step-by-step repair guide walks you through fixing electric oven f3e2 error on your KitchenAid KSDB900ESS (Dual Fuel). 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

If your KitchenAid KSDB900ESS is displaying an F3E2 error, you may notice one or more of the following symptoms before or alongside the fault code.

The oven display shows the “F3E2” error code and the oven shuts down mid-cycle
The oven fails to reach or maintain the set baking temperature
The control panel becomes unresponsive after the error code appears
The oven temperature reads significantly higher or lower than the selected setting

This error is typically caused by a failed or out-of-range oven temperature sensor (RTD probe), a damaged sensor harness, or a faulty connection between the sensor and the electronic control board.

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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

The F3E2 error code on your KitchenAid KSDB900ESS means the lower oven temperature sensor has an open circuit, which tells the control board it cannot read oven temperature and shuts down that cavity as a safety measure. Because this is a dual fuel range, the upper and lower ovens each have their own independent temperature sensor, so this fault is isolated to the lower oven only and will not affect the upper oven or cooktop.

Step 2

Unplug the range from the wall outlet before doing anything else — the sensor sits inside the lower oven cavity on the back wall and you will be disconnecting a wiring harness near metal edges that can cause shorts if power is live. Remove the two Phillips screws securing the sensor bracket, then carefully pull the sensor forward just enough to disconnect the 2-pin harness connector.

Step 3

Set your multimeter to Rx1 (resistance) and probe across the two sensor terminals to check whether the sensor itself has failed. At room temperature a good sensor reads approximately 1,080–1,100 ohms; a reading of infinite resistance (OL or no continuity) confirms the sensor element is open and the sensor must be replaced — no amount of reseating will fix a broken element.

Step 4

Even if the sensor tests good on the bench, inspect the entire length of the 2-pin harness before reassembling, because the wiring can be pinched against a sharp cavity edge or chafed through its insulation at the mounting hole, creating an intermittent open circuit that only appears when the oven flexes from heat expansion. Run your fingers along the wire looking for kinks, exposed copper, or melted insulation, and replace the harness if you find any damage — a compromised harness will cause the F3E2 to return even with a brand-new sensor.

Step 5

Thread the new sensor’s harness connector through the back wall opening, seat the connector until it clicks, then position the sensor in its bracket and drive the two Phillips screws in snugly but not overtightened — ceramic sensor bodies can crack under excess torque. Route the harness so it runs along the oven wall rather than across open cavity space, and clip it into the original cable retainer so it cannot drift toward the heating element during operation.

Step 6

Plug the range back in, set the lower oven to 350°F, and allow it to complete a full preheat cycle — the control board will read the sensor continuously and clear the F3E2 automatically once it confirms a valid temperature signal. Verify the fix by placing an independent oven thermometer inside the lower cavity and confirming it reads within 15–25°F of the set point, which tells you the new sensor is both connected and calibrated correctly.

Where to Buy Replacement Parts

Find genuine OEM and aftermarket replacement parts for your KitchenAid KSDB900ESS (Dual Fuel) 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 the oven temperature sensor yourself typically costs $20–$60 for the part alone. A professional service call for an F3E2 error on the KitchenAid KSDB900ESS runs $150–$300, including labor and diagnostics. By tackling this repair yourself, you can save over $100 while restoring your dual fuel range to full working order.

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Frequently Asked Questions

What does the F3E2 error code mean on my KitchenAid KSDB900ESS?

The F3E2 error indicates a faulty or shorted oven temperature sensor in the electric oven cavity. Replacing the sensor is typically the most straightforward fix for this issue.

Can I still use the gas cooktop while the F3E2 error is active?

Yes, since the KSDB900ESS is a dual fuel range, the gas cooktop operates independently and should function normally while the oven error is present.

How do I reset the F3E2 error after replacing the temperature sensor?

After replacing the sensor, disconnect the appliance from power for one minute, then restore power to clear the error code automatically.

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