Bosch E115 — Oven temperature exceeded safe limit — overheat protection triggered

What E115 means on your Bosch range

Error code E115 is a critical safety code indicating that the oven cavity temperature has exceeded the maximum safe operating limit. The control board has detected a temperature above the upper threshold — which can vary by cycle type but is typically above 550°F (288°C) during normal baking or above the self-clean maximum. The board immediately cuts power to the heating elements and locks the oven door until the temperature drops to a safe level.

Symptoms

• The oven shuts off unexpectedly during operation
• The oven door locks and won’t open
• E115 displayed on the control panel
• A burning smell or smoke from the oven (in severe cases)

Common causes

• Faulty temperature sensor — the sensor reads lower than actual temperature, causing the board to keep the elements on until true temperature overshoots
• Stuck relay on control board — the relay that controls the bake or broil element gets welded shut, keeping the element on regardless of the board’s signal
• Cooling fan failure — the cooling fan that ventilates the oven compartment stops working, allowing heat to build up around the electronics
• Self-clean aftermath — E115 can appear during or after a self-clean cycle if the temperature regulation fails

Troubleshooting steps you can try

1. Turn off the oven — cancel any running cycle and turn the oven off at the control panel.
2. Let it cool — do not attempt to open a locked oven door. Wait at least 30–60 minutes for the cavity to cool below the lock threshold.
3. Cut power if needed — if the oven elements remain on despite pressing Cancel, turn off the oven’s circuit breaker.
4. After cooling — power on and check if E115 clears. If it does, the overheat may have been a one-time event from a self-clean cycle.

When to call a technician

E115 is a serious safety code. If it appears during normal baking (not self-clean), the temperature regulation system has failed and must be diagnosed before using the oven again. A stuck relay is particularly dangerous because the elements will heat uncontrollably. A technician will test the sensor, relays, and cooling fan. Do not use the oven until it’s been inspected. Codes may vary by model generation and series.

Need help? Schedule Bosch Range repair with a certified technician, or contact our team for a free diagnosis consultation.