Thermador Oven Error Code E115

E115 indicates that the upper or single oven cavity detected a temperature that exceeded safe limits while the door was unlocked, meaning during normal cooking operation rather than a self-clean cycle. The oven control board triggered this fault as a safety measure to prevent damage or a hazard. Common causes include a stuck relay on the control board, a faulty temperature sensor, or a failed cooling or convection fan.

No, you should not continue using the oven after E115 appears. The error indicates an over-temperature condition that the control system flagged as unsafe, and continued operation could damage internal components or create a fire hazard. Power the oven off and allow it to cool fully before attempting any inspection.

Repair costs vary depending on the failed component. A replacement temperature sensor is typically in the range of $20 to $80 for the part, while a control board can cost between $150 and $400 or more. Adding labor charges from a qualified technician, total repair costs commonly fall between $150 and $600 depending on what needs to be replaced and your location.

Some causes, such as blocked vents or a visually burned-out heating element, can be identified and addressed by a knowledgeable DIYer. However, diagnosing a faulty control board relay or a subtly defective temperature sensor requires a multimeter and familiarity with appliance electronics. If you are not comfortable working with high-voltage components, a qualified appliance technician should handle the repair.

A reset by cycling the circuit breaker or powering the oven off for several minutes may temporarily clear the fault code, but it will return if the underlying cause is not corrected. Resetting is useful as a first step to confirm whether the fault is intermittent or persistent, but it is not a repair. If E115 returns quickly after a reset, the root cause must be diagnosed and fixed.