How to Replace KitchenAid Oven Temperature Sensor

The sensor is an NTC resistance probe — the RTD type shared with Whirlpool ranges — that the control board reads to know the cavity temperature. At a room temperature near 72°F it should measure about 1,080 to 1,100 ohms, and that resistance climbs predictably as the oven heats. When it drifts, opens, or shorts, the board loses its temperature reference and the oven misbehaves or throws an F3 code.

Tools and Parts#

Before You Start#

Safety warning: Disconnect power at the breaker. Allow the oven to cool completely if recently used. The sensor operates at oven temperature — touching a hot sensor causes burns.

Step-by-Step#

1. Find the sensor#

Open the door and look at the upper rear wall of the cavity, usually in an upper corner. The sensor is a thin straight rod about 3 to 5 inches long, held by a small bracket with one Torx T20 screw or threaded into the wall. Do not confuse it with the looped broil element or the convection parts — it has no coils.

2. Test it#

With power off, trace the sensor leads to the two-pin plug behind the range and disconnect it. On the meter's resistance range, read across the pins: about 1,080 to 1,100 ohms at a room temperature near 72°F is healthy. Below roughly 900 ohms it is shorted, above 1,200 ohms at room temperature it has drifted, and an open reading means the internal wire is broken. A normal reading points the fault upstream at the board.

3. Remove the old sensor#

Inside the cavity, take out the single Torx T20 bracket screw and pull the rod straight out; the wire feeds through the same hole. Behind the range the leads end at the two-pin plug, which you unplug. You can pull the assembly from the front or the back — either works.

4. Fit the new sensor#

Feed the new sensor's wire through the rear-wall hole from inside the cavity, leaving the rod protruding into the oven. Secure the bracket with its screw so the rod stands proud of the wall, away from direct element radiation, so it reads air temperature rather than radiant heat. Behind the range, push the keyed two-pin plug onto the board harness.

5. Test and calibrate#

Restore power; a valid sensor clears F3E0 or F3E1 at once. Set the oven to 350°F, put an oven thermometer on the center rack, and after preheat give it another ten minutes to settle. Within 10°F of set is spot on. Ten to twenty-five degrees off, use the calibration offset — hold BAKE for five seconds and adjust with the plus and minus keys. More than that with a new sensor points at the board, and the board also auto-adapts over a couple of heat cycles.

KitchenAid F3 Error Codes#

Troubleshooting#

• Code stays after the swap: a connector is only half-seated at the sensor or the board end, which mimics an open — reseat both.
• Temperature swings wildly: the rod may sit too near the broil element or a wall — make sure it stands into the cavity without touching metal.
• New sensor is fine cold but errors when hot: a rare defect; read resistance with the oven at 350°F, where it should be roughly 1,600 to 1,650 ohms.

When to Call a Pro#

Call a technician for an F3E3 over-temperature (a stuck element relay, not the sensor), for damaged wiring inside the insulation cavity, or for a melted or corroded connector at the board end that needs control-board access.

Need Professional Help?#

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