Oven shows E011 and will not start, often after a power outage or surge

Safety: Disconnect power before removing any panels.

• Hard reset: Turn off the oven at the breaker for at least 15 minutes to allow capacitors to discharge. Restore power and check if E011 clears.
• Factory reset (if available): Consult the user manual for a key combination to reset settings to factory defaults and perform it if possible.
• Check for updates: On Wi-Fi enabled Gaggenau ovens, use the app or settings menu to check for and apply any pending firmware updates once the error clears temporarily.

Note: Persistent E011 usually indicates a failing control board memory. Replacement of the main control module is typically required and should be done by an authorized service technician to ensure correct programming.