Thermador Oven Error Code E003

E003 on a Thermador oven means the user interface electronics have exceeded 185°F (85°C). The oven monitors the temperature of its control board and will trigger this fault code to prevent heat damage to the electronics. The oven will typically shut down or restrict operation until the underlying cause is resolved.

No, you should not continue using the oven while E003 is active. The code indicates that the control electronics are operating above their safe temperature limit. Continued use could cause permanent damage to the control board or create a safety hazard. Allow the oven to cool completely before troubleshooting.

Repair costs vary depending on the cause. Replacing a cooling fan typically runs in the range of $150 to $350 including parts and labor. A new user interface board can cost significantly more, often in the range of $300 to $600 or higher depending on the model. A service call for diagnosis alone generally runs $75 to $150 before any parts are factored in.

Some causes of E003 can be addressed without a technician, such as clearing blocked vents or allowing the oven to cool down after an extended cooking session. However, if the fault is caused by a failed cooling fan, a damaged door gasket, or a faulty control board, those repairs typically require disassembly and component replacement, which is best handled by a qualified technician.

A power reset by turning off the circuit breaker for 30 seconds may temporarily clear the E003 code, but the fault will return if the root cause has not been corrected. If the overheating condition persists, the code will reappear during the next use. A reset alone is not a repair.