Kenmore Oven Error Code F31

F31 means the appliance control board has detected a short circuit in the lower oven RTD temperature sensor probe circuit. The control board monitors the resistance of the probe and triggers this code when the resistance reads too low, indicating a shorted sensor or wiring problem. The fault disables the affected oven function to prevent unsafe operation.

It is not recommended to continue using the oven while the F31 fault is active. A shorted temperature sensor means the control board cannot accurately monitor lower oven temperature, which could lead to overheating or unreliable cooking results. The oven should be diagnosed and repaired before regular use resumes.

Repair costs depend on which component is faulty. A replacement RTD sensor probe typically costs in the range of $20 to $60 for the part alone. If the control board is at fault, parts can range from $100 to $300 or more depending on the model. Adding professional labor will increase the total cost, generally ranging from $150 to $400 or higher for a complete repair.

You can attempt a reset by allowing the oven to cool down completely and restarting the function, which is the recommended first step. However, if the short circuit condition in the probe or wiring still exists, the F31 code will return. A reset alone does not fix the underlying electrical fault, so the probe circuit should be tested before relying on the oven for normal use.

Start by letting the oven cool completely, then disconnect the lower oven RTD probe and measure its resistance with a multimeter, comparing the result to the probe resistance chart for your model. If the probe reads a very low or near-zero resistance, the probe is shorted and needs to be replaced. If the probe tests correctly, inspect the wiring harness for damaged insulation, pinched wires, or faulty connectors between the probe and the control board.