Denys Danyliuk Key Takeaways
- E115 on a Bosch oven means the oven exceeded its safe temperature and shut the heating down.
- Switch off at the circuit breaker, not just the button, and keep the door closed if you smell burning.
- Wait at least two hours for the oven to cool fully before inspecting.
- The named causes are a sensor reading low and a stuck heating relay, both for a professional.
- Do not reset the code and carry on: it is a critical hardware fault.
The Bottom Line
E115 means the oven ran past its safe temperature, so treat it as a fire-safety event. Breaker off, door closed, two hours to cool, and no cooking until a technician has fixed the sensor or relay.
A Bosch oven E115 too hot message means the control has shut the heating down because the oven passed its safe maximum temperature. The oven E115 error page calls it a critical safety alert and a fire safety issue, so this is one of the few oven codes where the right move is to cut the power and wait before doing anything else.
| What you notice | What it points to | What to do right away |
|---|---|---|
| Strong burning or scorching smell from the cavity | Oven ran well past its set temperature | Breaker off, door closed, ventilate the room |
| Oven exterior and nearby cabinets very hot | Heat is not being controlled | Breaker off, keep people clear |
| Oven shuts down and will not restart | Automatic safety shutoff has acted | Leave it off until it is diagnosed |
| E115 on the display with no smell | Safety circuit tripped, cause not yet known | Still breaker off, still no restart |
What Does Bosch Oven E115 Mean?
E115 means the oven has exceeded its maximum safe operating temperature, and the control has shut all the heating elements down to prevent a fire. It is a protective response, so the shutdown is the safety system working, not the fault itself.
It also tells you what not to do. The oven is not broken in a way that a restart will repair; it stopped heating because something let the temperature run away, and that something is still there when the power returns.
The fault is whatever let the temperature climb. The code page names two causes: a failed temperature sensor that reads low, so the oven keeps heating before the board sees the real temperature, and a stuck heating relay that delivers continuous heat. A third item on its professional list is thermal damage to the oven board.
What Should You Do the Moment E115 Appears?
Turn the oven off at the circuit breaker, not just with the button. The code page is explicit that pressing off is not enough, because the aim is to disconnect power completely.
- Switch the oven off at the circuit breaker.
- If you smell burning, do not open the oven door. Let it cool with the door closed.
- Open a window if there is a burning smell, and keep the area ventilated.
- Wait at least two hours for the oven to cool completely before inspecting anything.
- Do not reset the code and carry on cooking. It is a critical hardware fault, so restart only after a professional repair.
Keep children and pets out of the kitchen while the oven cools, and keep anything flammable away from it.
Do not try to speed the cooling up. Opening the door on a very hot cavity can release a rush of heat and smoke, and the cooling time on the code page exists for a reason.
Is It Safe to Use a Bosch Oven After E115?
No, do not use the oven until a professional has found and fixed the cause. The code page says E115 indicates a critical hardware fault and that resetting it and carrying on is unsafe.
- A cleared code is not a fixed oven. When power returns and the display looks normal, the cause is still inside.
- The same fault can repeat. A sensor that reads low or a stuck relay will do it again on the next bake.
- Cabinet heat is a warning. Hot cabinetry beside the oven means heat is leaving the cavity.
- Stop at any burning smell. An oven that smells scorched has been far hotter than the dial said.
Our Bosch oven overheating safety guide sets this fault next to the other ways an oven can run hot.
Remember that the code does not mean the oven is about to catch fire at this moment; it means the safety system acted in time. Treat the next hours with the same care, because a hot cavity stays hot for a long while.
How an Oven Ends Up Overheating
The two named causes work against the same safety logic. The oven controls its heat by reading a temperature probe and switching a relay on and off, and each part that fails breaks a different half of that loop.
- Temperature sensor reading low. The board thinks the oven is cooler than it is, so it keeps the elements on until the oven passes its limit and E115 appears.
- Stuck heating relay. The relay that powers the element is stuck closed and delivers heat that the board cannot switch off.
- Board with thermal damage. The code page also lists thermal damage to the oven board as a reason to call a professional.
None of these is a homeowner repair. The sensor sits in the cavity wall and the relay on the control board, and both need the oven unpowered and opened.
How Is E115 Different From the Relay and Board Codes?
E115 is about temperature that has already run too high, while E303 reports that the electronic relay module has overheated. The two can appear on the same oven, since a stuck relay both overheats the oven and heats itself.
If your oven simply will not heat, that is the opposite problem, and it is covered in our guide to a Bosch oven that is not heating.
After the Oven Cools: Checks and What to Tell Us
Once the two-hour wait is over, a few observations are safe and useful, and none of them involves opening the oven or the control panel. The aim is to give the technician a clear picture and to keep the oven off until it is repaired.
- Look at the door seal and the cavity. Scorched or deformed gasket material tells the technician how hot the oven got.
- Note what you were cooking. A long bake at a high setting is different from a short preheat, so write it down.
- Check the cabinets around the oven. Warped or discolored trim beside the oven shows heat is escaping.
- Keep the breaker off. Leave it off until the visit, so nobody tries the oven out of habit.
Cook on the cooktop or a small countertop appliance in the meantime, and keep a working smoke alarm in the kitchen.
When and How to Get It Fixed
Book a technician before the oven is used again, since the repair involves the sensor, the relay or the board and all three need testing. The diagnostic starts from $89, and the final price is confirmed after the on-site diagnosis, with a written estimate before any work begins. Our Bosch oven repair service covers the sensor and the relay. You can book a visit or tell us what you saw and smelled before the shutdown, so the technician comes with the right parts.