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Error code reference

Kenmore Range Error Code F30

Open RTD sensor probe or wiring problem (EOC may initially display F10 thinking a runaway condition exists)

Kenmore codesKenmore range codes

Open RTD sensor probe or wiring problem (EOC may initially display F10 thinking a runaway condition exists). Displayed when oven is in active mode or an attempt to enter an active mode is made.

First step from the service manual

Check wiring in probe circuit for possible open condition. Check RTD resistance at room temperature (compare to probe resistance chart). If resistance does not match the chart, replace the RTD sensor probe.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F30 means on a Kenmore range

The F30 error code on a Kenmore range indicates an open circuit condition in the RTD (Resistance Temperature Detector) sensor probe circuit. The RTD sensor is a thermistor-style probe mounted inside the oven cavity that monitors oven temperature by changing its electrical resistance in a predictable, linear pattern as temperature rises and falls. The Electronic Oven Control (EOC) board continuously reads the resistance value from this probe to regulate heating. When the circuit reads as open, meaning no resistance signal is present, the EOC loses its ability to determine oven temperature.

A key detail about F30 is how it relates to F10. The EOC may initially display F10, which signals a runaway temperature condition, before settling on F30. This happens because an open circuit can be momentarily interpreted by the board as an extreme high-temperature reading before the control logic identifies the true fault as an open probe or wiring condition. F30 only appears when the oven is actively operating or when the user attempts to start an active cooking mode.

Diagnosis starts at the wiring in the probe circuit. A break, burn, or loose connection anywhere from the probe connector to the EOC board can produce this fault. If wiring checks out, the probe itself should be tested with a multimeter. RTD sensors follow a specific resistance-versus-temperature curve, and the measured resistance at room temperature should match the probe resistance chart for that unit. A resistance reading that falls outside the expected range confirms a failed probe requiring replacement.

Source: manufacturer service documentation.

Common causes of F30

  1. 01

    Failed RTD sensor probe

    Part replacement

    The RTD probe itself can fail internally, breaking the circuit and producing an open reading. Testing resistance with a multimeter at room temperature and comparing to the probe resistance chart will confirm a faulty probe.

  2. 02

    Broken or disconnected probe wiring

    Wiring / connection

    The wires running from the RTD probe to the EOC board can crack, burn, or pull loose from connectors, especially near the oven cavity where heat exposure is high. Visually inspecting the full wire harness and checking for continuity will identify an open in the circuit.

  3. 03

    Corroded or loose probe connector

    Wiring / connection

    The connector that joins the probe leads to the wiring harness can develop corrosion or back out of its socket, creating an intermittent or permanent open circuit. Disconnecting and reseating the connector while inspecting the terminals for oxidation is a quick check.

  4. 04

    Probe wiring damaged at oven rear wall

    Part replacement

    The point where probe wiring passes through or around the oven cavity wall is a common wear location. Repeated thermal cycling can cause insulation to crack and wires to short or break at that junction.

  5. 05

    Faulty EOC board

    Part replacement

    If the probe and all wiring test correctly and resistances match the probe resistance chart, the EOC board itself may have a failed input circuit that cannot read the probe signal. Board replacement is typically a last-resort diagnosis.

See the test procedure for each cause

Frequently asked questions about F30

What does F30 mean on a Kenmore range?
F30 on a Kenmore range means the Electronic Oven Control board has detected an open circuit in the RTD temperature sensor probe circuit. The board is not receiving a valid resistance signal from the probe, which prevents it from monitoring oven temperature. The code appears when the oven is running or when you try to start a cooking function. The cause is usually a broken wire, loose connector, or a failed sensor probe.
Will resetting my Kenmore range clear the F30 code?
Resetting the range by cutting power at the breaker for a few minutes may temporarily clear the display, but F30 will return as soon as you try to use the oven again if the underlying fault is still present. The code is triggered any time an active mode is attempted with an open probe circuit. A reset is only useful for ruling out a one-time control glitch, not for resolving a wiring or sensor problem.
Is it safe to use my Kenmore range while it shows F30?
You should not attempt to use the oven while F30 is active. The control board cannot read oven temperature, which means it cannot regulate the heating elements properly. Operating the oven in this condition creates a risk of overheating. Surface burners on a gas or electric range may still function, but the oven should remain off until the fault is diagnosed and repaired.
How do I fix the F30 error code on a Kenmore range?
Start by unplugging the range and inspecting the wiring harness connected to the RTD sensor probe for any visible breaks, burn marks, or disconnected plugs. Reconnect or repair any loose connections you find. Next, test the probe's resistance with a multimeter at room temperature and compare the reading to the probe resistance chart for your model. If the resistance is out of range, replace the RTD sensor probe. If wiring and the probe both test correctly, the EOC board may need to be evaluated.
How much does it cost to repair a Kenmore range F30 error?
If only a wiring repair or connector reseating is needed, costs are minimal, typically just your time. An RTD sensor probe replacement generally runs between $20 and $60 for the part, depending on the model. If the EOC control board is the root cause, board replacement can cost anywhere from $100 to $300 or more for the part alone. Professional labor charges will add to these figures depending on your location and service provider.

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