KitchenAid Oven Error Code F3 E3

F3 E3 means the oven's control board detected a temperature exceeding 510°C (950°F) during the self-clean cycle, which is well above the normal operating range for that mode. The code points to a problem in the temperature sensing or heating control system. The most likely causes are a faulty RTD temperature sensor, a bad wiring connection to that sensor, or relay contacts on the control board that are stuck in the closed position.

Resetting the oven by cutting power at the breaker for a few minutes may temporarily clear the code, but it will almost certainly return the next time the self-clean cycle is run if the underlying problem is not repaired. A reset does not fix a faulty sensor, damaged wiring, or a welded relay. The fault condition needs to be physically diagnosed and corrected for the error to be permanently resolved.

Repair costs vary depending on which component has failed. A replacement RTD temperature sensor typically costs in the range of $20 to $60 for the part, while a control board replacement can range from $150 to $350 or more depending on the model. Adding professional labor, total repair costs can range from $100 to $500 or higher. Getting a diagnosis before ordering parts helps avoid unnecessary expenses if, for example, the fix turns out to be a simple wiring connection repair.

No, you should not use the oven while this error is active. The F3 E3 code indicates the oven may be reaching dangerously high temperatures that exceed its design limits. Continuing to operate it risks damage to the oven cavity, surrounding cabinetry, and potential fire hazard. Disconnect power to the unit and have it inspected before using it again.

Start by measuring the resistance of the oven temperature sensor at room temperature; it should read approximately 1,080 ohms. Also inspect the sensor wiring harness for loose, corroded, or burnt connections. If the sensor and wiring check out, the next step is inspecting the control board for signs of relay failure such as arcing marks or a burnt smell. Depending on the faulty component, the repair will involve replacing the sensor, repairing the wiring connection, or replacing the control board.