Bosch Oven Error Code F113

F113 indicates a thermal runaway condition in the upper or single oven cavity, specifically that the oven temperature has exceeded 950°F. The control board triggers this fault to shut down heating and prevent damage or a fire hazard. The most common causes are an intermittent temperature sensor or a heating element relay on the Power Board that is stuck in the closed position. The first step in diagnosing this fault is inspecting the P4 connector on the Power Board.

A power reset by disconnecting the oven from electricity for several minutes may temporarily clear the F113 code, but it will not fix the underlying problem. If the faulty sensor, stuck relay, or connector issue is not addressed, the fault will return, often quickly once the oven begins heating again. A reset is useful for ruling out a one-time electronic glitch, but repeated occurrences confirm a hardware fault that requires hands-on diagnosis.

Repair costs vary depending on which component is at fault. A replacement temperature sensor typically runs in the range of $20 to $60 for the part, while a Power Board replacement can range from $150 to $350 or more depending on the specific model. Adding professional labor costs can bring the total repair bill anywhere from $200 to $500 or higher. Getting a diagnosis from a qualified technician before ordering parts is recommended to avoid unnecessary expense.

No, you should not attempt to operate the oven while F113 is active. The fault indicates the oven either reached or has the potential to reach dangerously high temperatures beyond normal operating limits. Continuing to use it before the cause is identified and repaired creates a risk of further component damage and a potential fire hazard. Disconnect power to the oven until the fault has been properly diagnosed and resolved.

Begin by inspecting and reseating the P4 connector on the Power Board, as a loose connection here is the first item to rule out. Next, test the upper oven temperature sensor for correct resistance values and look for intermittent behavior. If the sensor checks out, verify that the heating element relay on the Power Board is cycling correctly and not staying closed when commanded off. Depending on the findings, the repair will involve replacing the temperature sensor, the Power Board, or both.