Kenmore Oven F3-E0 Error: Bake/Oven Sensor Open Circuit (F-E Hybrid Format)
The kenmore oven f3-e0 error is a fault signal from the control board — this guide walks through what it means, common causes, and safe diagnostic steps. What Does Kenmore Wall Oven Error Code F3-E0 Mean? F3-E0 on a Kenmore 790-series wall oven is the F-E hybrid format version of the F30 oven sensor open-circuit […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. F3-E0 disables all heating elements. The Kenmore wall oven cannot perform any cooking function until the open-circuit sensor or harness is repaired and the fault clears.
Can I reset the code?
No. Resetting the breaker clears F3-E0 from the display only until the next cook command, at which point the board re-checks the sensor and immediately re-sets the fault. Hardware repair is required.
When to stop immediately?
Stop if you notice: F3-E0 returns immediately after new sensor installation — confirming the harness or board is the source, Harness connector at the ERC board shows burned or corroded pins on the sensor input channel.
Symptoms You May Notice
Oven refuses to heat in bake or broil — displays F3-E0 immediately on start
The ERC board checks sensor continuity the moment a cook function is selected. With an open-circuit RTD, F3-E0 appears within seconds of pressing Start and the elements remain de-energized.
Temperature display shows dashes or an error symbol instead of a climbing preheat number
Because the board has no sensor data, the temperature display on Kenmore 790 models showing F3-E0 displays dashes or an error marker rather than the usual rising preheat temperature.
Code is persistent — returns immediately after any reset without a cook cycle being completed
Unlike intermittent codes that may clear for a session, F3-E0 returns within seconds of any bake command because the underlying open-circuit sensor condition is constant.
Bake element never glows red even briefly during a start attempt
Looking through the oven window after pressing Bake on a Kenmore 790 showing F3-E0, the bottom bake element stays dark metallic gray — the board never energizes it for even a test pulse because the open-circuit sensor is detected first.
Possible Causes
Open-circuit RTD oven sensor probe — same as F30
The RTD probe mounted at the upper rear of the oven cavity has an internal break in its sensing element wire, producing infinite resistance. This is the most common cause of F3-E0 and is repaired by probe replacement.
DIY PossibleDisconnected or broken sensor wire harness at the cavity wall grommet
The two-wire harness connecting the RTD sensor to the ERC board has either pulled loose from the probe connector or broken internally at the cavity wall grommet where repeated heating and cooling causes flex fatigue.
DIY PossibleERC board sensor input ADC circuit failure — same as F30 board-level cause
An open trace or failed input resistor on the ERC board makes a functional sensor appear as an open circuit. This is an uncommon cause confirmed only after sensor and harness are verified good.
Requires ProfessionalSafe Checks You Can Do
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1
Confirm F3-E0 is equivalent to F30 for your model and measure sensor resistance
Verify your Kenmore 790 model number — F3-E0 appears on models whose ERC firmware uses F-E hybrid notation (common on post-2010 790.49xx models). Turn off the circuit breaker, remove the RTD sensor from its rear cavity bracket (two screws), disconnect the two-wire harness, and measure resistance. At 68–72°F, a good sensor reads 1,080–1,100 ohms. An open-circuit (OL) reading confirms the probe must be replaced.
Check your model's service sheet (often taped inside the storage drawer below the oven or available on manualslib.com) to confirm whether your unit uses F30/F31 notation or F3-E0/F3-E1 notation — both formats exist across the Kenmore 790 line and the underlying fault is identical.
Tools required -
2
Replace the RTD sensor and clear the fault
Install the correct replacement RTD probe for your Kenmore 790 model (part 316217002 is common across many 790.49xx units — confirm with your model number). Mount the probe with the original two screws and reconnect the harness. Restore breaker power and press Bake to confirm F3-E0 has cleared and the temperature display shows a rising preheat number.
After sensor replacement, run a full preheat cycle to 350°F and compare the oven display to a calibrated oven thermometer. A discrepancy of more than 25°F after the new sensor is installed suggests the board may also need attention.
Tools required
When to Call a Professional
Contact a qualified technician if:
- Replacement sensor measures 1,080–1,100 ohms at room temperature but F3-E0 still sets on the next preheat attempt
- Harness continuity test shows an open conductor between probe connector and ERC board — requiring harness replacement
- Board sensor input pin shows no voltage output when probed during a test preheat
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