Bosch Oven Error Code F112

F112 indicates that the lower oven temperature has exceeded 650°F, triggering a runaway temperature fault. The oven shuts down to prevent damage or a safety hazard. This can be caused by restarting the oven while it is still hot, a faulty temperature sensor, or a heating element relay that is stuck in the on position. Allowing the oven to cool fully is the first step in resolving the error.

No. The F112 code indicates the oven has detected or experienced a runaway temperature condition, and the unit has disabled itself as a protective measure. Attempting to bypass this fault or continue using the oven before diagnosing the root cause could result in overheating, component damage, or a fire hazard. The oven should remain off until the underlying cause has been identified and corrected.

Repair costs vary depending on the failed component. A lower oven temperature sensor is generally the least expensive fix, with parts typically ranging from $20 to $60 and labor adding to that total. If the control board requires replacement due to a stuck relay, parts alone can range from $150 to $400 or more depending on the model. A diagnostic service call to identify the root cause usually costs between $75 and $150 before any parts or additional labor.

A reset may clear F112 temporarily if the error was triggered by powering the oven on before it had cooled below 650°F from a previous use. However, if the fault is caused by a defective temperature sensor or a stuck relay, the code will return once the oven attempts to heat again. A full cool-down followed by a power cycle is recommended before assuming the issue is resolved.

Start by turning off the oven and allowing it to cool completely before restoring power. If F112 does not return after a full cool-down, the error was likely caused by restarting the oven while it was still too hot. If the code comes back, the lower oven temperature sensor should be tested for correct resistance output, and the control board should be inspected for a relay stuck in the closed position. Replacing the defective component, either the sensor or the control board, will be necessary if either is found to be faulty.