Bosch Oven Error Code F111
F111 is a safety fault: the upper (or only) cavity's temperature climbed far beyond the set point and kept going. The usual cause is a relay whose contacts have welded shut, holding an element on. Cut the power at the breaker first; diagnosis comes second.
Common causes
- Heating relay on the power board stuck (welded) closed
- Temperature sensor reading far too low, so the control keeps calling for heat
- Control board failure
What to check, in order
- Switch the oven off at the breaker and leave it off — a runaway oven keeps heating with the controls off, so do not just cancel the cycle.
- Let the cavity cool completely before opening the door or touching anything inside.
- Once cool and powered again, note whether the code returns immediately or only in a heating mode, and tell the technician which.
- Runaway temperature is a board- or sensor-level fault with a fire risk if ignored; this is professional work, not a DIY repair.
Clear the code and test
- Fix what the checks above found first. Clearing the code without fixing the cause only brings it back.
- Plug the appliance back in and restore its water supply if it has one.
- Run the shortest programme and watch the point where the code appeared before.
- If the programme finishes with no code, the fault is cleared. If the code returns, write it down before calling a technician — it speeds up the diagnosis.
When to call a professional
This code usually points to a faulty part, wiring or the control board on a Bosch oven. Run the checks above to rule out the simple causes, then book a technician — and book one straight away if any of these apply:
- The code comes back after you have run the checks and a test cycle.
- You smell burning, see sparks or scorch marks, or the breaker trips.
- Water is leaking and you cannot stop it at the tap.
- The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.
When you call, give the brand, the code F111, your model number (on a label inside the door or on the back) and the checks you already ran. It shortens the visit.
Repair or replace?
This fault is in professional territory: the fix usually means a major part or board-level work, and the labour adds up. If your machine is already well into its service life, get the repair quote first, then compare it with the price of a current equivalent model before you decide. Paying a large share of a new machine's price to repair an old one is rarely the better deal; replacing a machine over one cheap fault is wasteful too.
Parts that may be involved
Power board (relay board)Oven temperature sensor
Parts are model-specific. Find your model number first — usually on a label inside the door, on the door frame or on the back — and match the part to that number before ordering.
Questions people ask about F111
What does F111 mean on a Bosch oven?
F111 means: Runaway oven temperature (upper or single oven). F111 is a safety fault: the upper (or only) cavity's temperature climbed far beyond the set point and kept going. The usual cause is a relay whose contacts have welded shut, holding an element on. Cut the power at the breaker first; diagnosis comes second.
Can I fix Bosch F111 myself?
Only the preliminary checks. Code F111 usually means a part, wiring or the control board has failed, which is a technician job. Run the checks to rule out simple causes before you book.
How do I clear Bosch F111?
Fix the cause first — clearing the code on its own brings it straight back. Then restore power and water, run the shortest programme, and watch the stage where the code appeared. If the programme finishes with no code, it is cleared.
Sources checked
- Bosch Home (US) owner support: dishwasher error codes
- Coolblue advice: Bosch and Siemens washing machine errors
The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.