KitchenAid Oven F3 E2 Error: Lower Oven Sensor Open
What Does KitchenAid Oven Error Code F3 E2 Mean? Error code F3 E2 on a KitchenAid double wall oven indicates an open circuit on the lower cavity temperature sensor. KitchenAid KODE and KODC series double-wall ovens use independent RTD probes in each cavity, and F3 E2 specifically points to the lower probe. When the board […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. The lower oven cavity should not be used in any heating mode without a functioning temperature sensor. The upper cavity may be used independently if it operates normally and shows no faults.
Can I reset the code?
No. F3 E2 is a persistent hardware fault that will return immediately after any reset as long as the open circuit exists. Sensor or harness replacement is required.
When to stop immediately?
Stop if you notice: Lower cavity produces heat without a set temperature displaying — possible runaway, Fault appears on every lower-oven attempt after a new sensor is installed.
Symptoms You May Notice
Lower oven cavity will not heat while the upper cavity operates normally
Selecting a lower-oven bake or broil function produces no heat; the upper oven continues to work correctly, isolating the fault to the lower cavity sensor circuit.
Lower cavity temperature display freezes at room temperature
The lower-cavity readout remains at ambient temperature rather than rising toward the set point, confirming the sensor is providing no signal to the control board.
Lower oven self-clean selection is greyed out or immediately cancelled
Attempting to start a self-clean cycle on the lower cavity results in an immediate F3 E2 fault and cancellation because the board cannot monitor cavity temperature during the high-heat cycle.
Possible Causes
Failed lower cavity RTD temperature probe
The sensing wire inside the lower oven probe has broken, creating an open circuit that the control board cannot read.
DIY PossibleDisconnected or damaged lower sensor harness
The wire run from the lower cavity to the shared control board is longer than in single-wall models and more susceptible to damage during installation or service access.
DIY PossibleControl board lower-sensor input circuit failure
The board's dedicated lower-cavity sensor measurement channel has failed, requiring board replacement rather than sensor replacement.
Requires ProfessionalSafe Checks You Can Do
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1
Confirm the fault is isolated to the lower cavity
With power on, attempt to run both cavities independently. If the upper cavity heats normally and only the lower triggers the fault, the lower sensor circuit is the issue rather than the control board.
Documenting which cavity fails helps the technician narrow the repair quickly on KODE double-wall models.
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2
Measure lower sensor resistance after de-energizing the oven
Unplug the oven, access the lower cavity sensor connector (usually at the rear of the lower cavity or behind the lower drawer panel), and measure resistance across the probe terminals. Target: approximately 1,080–1,100 ohms at 68°F.
If you measure open loop (OL), the sensor needs replacement. If resistance is correct but F3 E2 persists, the harness or board input has failed.
Tools required
When to Call a Professional
Contact a qualified technician if:
- Replacement sensor tests within spec but F3 E2 persists — board channel has failed
- Harness routing through the oven chassis requires partial disassembly beyond DIY reach
- Fault appears alongside lower-cavity element burn indicators
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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