KitchenAid Range Error Code F23

F23 indicates a boil over temperature condition in the range's steam boiler system. The control board has detected that the boiler temperature has reached an unsafe level, either due to an actual overheating event or a faulty temperature sensor sending incorrect data. The range shuts down the affected function to prevent damage or a safety hazard.

You should avoid using the steam boiler function until the fault is resolved. An actual boil over condition in the steam system can damage internal components and create a burn or scalding risk. Standard oven and surface burner functions may still be operable, but confirm the issue is isolated to the boiler before continuing to use the appliance.

Repair costs vary depending on the cause. A replacement boiler temperature sensor typically runs in the range of $20 to $60 for the part alone. If the control board needs replacement, parts can range from $150 to $350 or more. Adding professional labor will increase total costs, generally ranging from $100 to $200 per hour depending on your location.

Some causes of F23 are DIY-friendly. You can start by unplugging the range, disconnecting the boiler sensor, and measuring its resistance with a multimeter. A reading outside the 130 kΩ to 60 kΩ range at 68°F to 95°F confirms a bad sensor that can be replaced. You can also inspect the boiler for scale buildup and check water levels without advanced technical skills.

Disconnecting power may temporarily clear the F23 code, but if the underlying fault persists, the error will return once the boiler system is active again. A lasting fix requires diagnosing and correcting the root cause, whether that is a failed sensor, mineral buildup, or a wiring issue.