What this code means
The F3 error code on a Whirlpool range or oven indicates a problem with the oven temperature sensing circuit. Whirlpool uses F3 with subcodes (F3 E0, F3 E2) to flag faults in the oven temperature sensor, the electronic control board, or the wiring connecting them. On some models equipped with a warming drawer, F3 E2 can also involve the warming drawer sensor. Regardless of the subcode, the fault prevents the control from accurately reading or interpreting oven temperature, so the unit will stop heating and display the code.
The sensor itself is a resistance temperature detector (RTD probe) that sits inside the oven cavity and reports temperature to the main control board. When the sensor fails, develops an open circuit, or sends a signal the control cannot interpret, the F3 family of codes appears. Wiring faults and control board failures are less common but still possible.
Before You Replace Anything
Many people replace the expensive control board first when the real fault is a $20 sensor. Always unplug the sensor and inspect the connector and wiring for damage or corrosion before ordering any board.
Common Causes
- Failed oven temperature sensor The RTD probe inside the oven cavity develops an internal open or short, sending no signal or a signal out of range to the control board.
- Loose or damaged wiring and connectors The plug-in connector between the sensor and control harness corrodes, backs out, or the wires become pinched or broken, interrupting the circuit.
- Control board fault The electronic control board itself fails to interpret a good sensor signal correctly, flagging a false fault.
- Warming drawer sensor fault (F3 E2 on equipped models) On ranges with a warming drawer, the drawer’s own temperature sensor can trigger F3 E2 when it fails or its wiring is damaged.
Step-by-Step Fix
- Kill power at the circuit breaker and wait one full minute to allow the control to reset, then restore power and watch for the code to return.
- Pull the range forward and remove the rear access panel to expose the oven temperature sensor and its wiring harness.
- Locate the sensor probe at the back wall of the oven cavity (inside) and trace its wire to the plug-in connector on the harness.
- Unplug the connector and inspect both the plug and socket for corrosion, bent pins, or burn marks. Clean or repair any damage.
- Remove the sensor by unscrewing the mounting bracket (usually one or two screws) and pulling the probe out of the oven cavity.
- Install the new sensor by inserting the probe through the same hole, securing the bracket with screws, and plugging the connector firmly into the harness.
- Reassemble the access panel, push the range back into place, restore power, and start a bake cycle to verify the code is gone and the oven heats.
Parts Often Needed
| Part | Notes |
|---|---|
| Oven temperature sensor / RTD probe | Amazon | Match the part number on your model’s wiring diagram or tech sheet. Most sensors include a short pigtail and connector. |
| Electronic control board (oven control) | Amazon | Only needed if a new sensor and clean connections do not clear the code. Verify your exact model number before ordering. |
When to Call a Pro
Call a technician if you are uncomfortable working behind the range, if your unit is a slide-in or built-in model that requires countertop or cabinetry removal to access the back panel, or if you have replaced the sensor and checked all wiring but the F3 code still appears. A pro can verify sensor resistance against the factory specification table, test the control board’s sensor circuit with a simulator, and safely handle any high-voltage wiring. Also call if your model has both an oven and a warming drawer and you are unsure which sensor is at fault.