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Error code reference

Frigidaire Range Error Code F31

Shorted RTD sensor probe or wiring problem

Frigidaire codesFrigidaire range codes
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What the F31 error code actually means

Your Frigidaire range is displaying F31 because the oven's temperature sensor is sending an abnormal signal to the control board, making it impossible for the oven to accurately read the temperature inside. This is similar to a thermometer that gives a wildly incorrect reading, causing the oven to shut down as a safety precaution. The problem is typically a faulty temperature sensor, a damaged wire, or a loose connection somewhere between the sensor and the oven's control board.

Diagnostic procedure

The full F31 procedure

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1
First diagnostic step
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. Let the oven cool down and restart the function. If the problem persists, replace the EOC.
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Most common causes of F31

Ranked by how often they cause this code
  1. 1Failed RTD Sensor Probe (internal short)
  2. 2Shorted wiring harness between EOC and probe connector
  3. 3Damaged or corroded probe connector
  4. 4Faulty Electronic Oven Control (EOC)

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Questions people ask about F31

What does the F31 error code mean on a Frigidaire range?
F31 means the Electronic Oven Control has detected a shorted connection in the RTD sensor probe circuit. The control board monitors resistance from the oven temperature sensor, and when that resistance drops below the expected range (typically below 500 ohms), it flags the short and disables oven operation. The fault can be in the probe itself, the wiring harness, or the connector between them.
Can I still use my Frigidaire range while the F31 code is active?
The oven functions will not operate while F31 is active because the control board cannot reliably read oven temperature. Surface burners on a gas range may still ignite, but you should not attempt to bypass or ignore the fault. Running the oven without a functioning temperature sensor creates a risk of overheating, so the oven should remain out of service until the shorted probe or harness is repaired.
Will resetting my Frigidaire range clear the F31 code?
Cutting power to the range for a few minutes may temporarily clear the F31 display, but the code will return as soon as the control board re-checks the sensor circuit and detects the short again. A reset does not correct the underlying electrical fault. The probe resistance and harness condition must be physically inspected and the shorted component replaced before the code will stay cleared.
How do I fix the F31 error code on my Frigidaire range?
Start by unplugging the range and locating the RTD sensor probe inside the oven cavity. Disconnect the probe and measure its resistance with a multimeter at room temperature, then compare that reading to the RTD resistance chart in your service manual. If resistance is below 500 ohms, replace the probe. If the probe tests normal, inspect the wiring harness from the probe connector back to the EOC for pinched, melted, or shorted wires and replace or repair the harness as needed.
How much does it cost to repair an F31 error on a Frigidaire range?
An RTD sensor probe is typically a low-cost part, ranging from roughly $20 to $50 depending on the model, and replacing it is a manageable DIY repair requiring only basic tools. If the wiring harness is damaged, the harness itself may cost $30 to $80 in parts, though routing and securing it correctly can be more involved. If the EOC needs replacement, parts and labor from a technician can push total costs to $200 or more, so exhaust the probe and harness diagnosis first.

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