A Bosch double wall oven that displays F112 or F114 may be reporting an overtemperature condition. In the source, F112 refers to the lower cavity and F114 to the upper cavity. Both require the oven to be switched off until the cause is understood. Bosch oven F112 and F114 are safety faults, so this is not a case for repeatedly clearing the display and trying another cook.
The source describes a threshold near 950°F for its model. The exact code meaning and threshold should be verified in the oven’s technical sheet. The troubleshooting path checks cooling, sensors, door components, heaters, and the control board in that order.
What the Two Codes Mean
The codes identify different cavities on the source’s double oven:
- F112 points to the lower oven cavity.
- F114 points to the upper oven cavity.
Possible causes named by the source include:
- A temperature sensor that reports an incorrect value.
- A damaged door gasket, hinge, or latch.
- A heating element that does not switch off when commanded.
- A shorted or damaged wire.
- A control board that cannot regulate heat correctly.
The displayed code does not prove which one failed. It does justify leaving the affected oven off. An overheated cavity or a faulty control can create a serious fire risk.
Safety Before Any Test
- Turn off oven power at the breaker when F112 or F114 appears.
- Leave the oven off until it has fully cooled, which may take several hours.
- Keep combustibles away from the oven while the cause is being assessed.
- Do not touch internal wiring or a sensor with power on.
- Wear gloves around cabinet edges and cool heating elements.
- Do not run self-clean as a casual confirmation test after an overtemperature fault.
- Use a qualified oven technician for live heater, relay, and control-board diagnosis.
The source proposes a full self-clean cycle after board replacement. Because the fault concerns uncontrolled heat, that test should be performed only under the model’s service procedure by a qualified technician after the cause is verified and repaired.
How to Troubleshoot Bosch Oven F112 and F114
Follow the source’s order while using the exact oven model’s resistance values and wiring diagram. The sequence should stop whenever an unsafe condition is found.
Turn Off the Oven and Let It Cool
- Shut off oven power at the breaker as soon as F112 or F114 is shown.
- Leave it off until the cavity cools completely. The source notes that this can take several hours.
- Do not restart it simply because the display has cleared or the cavity feels cooler.
Cooling is the first step, not the repair. The underlying fault needs diagnosis before cooking resumes.
Inspect the Temperature Sensors
- With power isolated, disconnect the sensor wiring as directed by the model service sheet.
- Measure each relevant sensor’s resistance with an accurate meter. The source gives about 1,000 to 1,100 ohms at room temperature for its example, but the model specification controls.
- Check connector pins for corrosion or damage. Clean or replace parts as the model instructions permit.
- Inspect sensor-wire routing for damaged insulation or contact with the chassis.
- Remove and visually inspect a sensor if the service procedure calls for it.
- Confirm that each tested sensor is mounted securely in its intended location.
An unstable or incorrect reading can make the control respond to a temperature that is not real. It still needs a model-specific test before replacement.
Check Door Gaskets and Latches
- Use a flashlight to examine each relevant door gasket for gaps, tears, or missing material with the door open and closed.
- Check that the latch operates and the door closes evenly.
- Inspect hinges for warping or misalignment and repair damaged parts as needed.
- Use the source’s paper-slip check around the closed door perimeter to find an area with poor gasket contact.
The door needs a stable seal. A worn gasket or crooked hinge can also expose surrounding surfaces to unusual heat. Do not adjust a latch while the oven is hot.
Have the Heating Circuit Tested
- A qualified technician can perform the source’s low-temperature bake observation and look for abnormal heating behavior.
- With power off, inspect the rear element wiring for overheating, short circuits, or damaged insulation.
- Test relays according to the service sheet for their expected open and closed states.
- Check that elements sit correctly in their holders and that terminals show no arcing.
- Remove and inspect a suspect element under the model procedure, then replace a confirmed defective part.
An element that remains energized when the control commands it off is a serious fault. Stop the test immediately if heating behaves abnormally.
Consider the Control Board Last
- Confirm that sensors, door hardware, heating elements, and wiring have been checked first.
- Obtain the exact board specified for the oven model if testing identifies it as the fault.
- Disconnect power and access the board according to the service instructions.
- Inspect the replacement board for visible damage before installation.
- Connect it without bending pins or pinching wires, then reassemble the oven.
- Have a qualified technician monitor several controlled heat-up and cool-down cycles to verify temperature regulation.
- Use any further high-temperature or self-clean test only when the model’s service procedure and qualified technician call for it.
The source lists a self-clean test, but it should never be the first post-repair run after a suspected overheat. Controlled verification comes first.
Information to Keep for Service
A concise record can help a technician locate the fault:
- The full oven model number.
- Which code appeared and which cavity was in use.
- Whether the fault followed bake or self-clean.
- Any unusual odor, smoke, or heat outside the cavity.
- Sensor readings and the temperature at which they were taken.
- Any damaged gasket, hinge, connector, or wire found.
Do not erase the code from the record even if it disappears after power is restored. The fault history may matter to the next diagnosis.
Summing Up
Bosch oven F112 and F114 both call for power off and a careful overheat diagnosis. The affected cavity differs, but the checks follow the same broad order: sensors, door fit, heating control, and board. Once the actual fault is repaired, a qualified, controlled test can confirm safe temperature regulation before normal cooking returns.