Miele Oven & Range Error Code FE91

• Oven will not heat or maintain temperature
• Display screen shows FE91 error code
• Heating elements do not activate when oven is turned on
• Oven may shut off unexpectedly during cooking
• Control panel buttons may be unresponsive or sluggish
• Unable to set cooking temperature or cooking mode
• Fan may run continuously or not at all
• Oven beeps repeatedly with error code display

• Loose or corroded electrical connections between control board and heating elements
• Faulty main control board or circuit board requiring replacement
• Damaged temperature sensor (RTD) preventing proper signal transmission
• Power surge or electrical fluctuation affecting 240V supply (or 120V on some models)
• Malfunctioning relay switches on the control board
• Wiring harness disconnection inside the oven cabinet
• Failed software update or control board memory corruption
• Defective door latch switch preventing proper door closure detection
• Intermittent 240V/120V power supply issue from home's electrical system

• Check your home's circuit breaker panel and ensure the oven's dedicated breaker is in the ON position; if it's tripped, switch it OFF then back ON
• Verify that the oven door is fully closed and latches properly with an audible click
• Ensure the control panel is not wet or have any debris on touch controls; gently wipe with a dry cloth
• Allow the oven to cool completely for at least 30 minutes before attempting to use again
• Confirm proper ventilation around the oven by checking that vents and exhaust areas are not blocked
• Perform a hard reset by switching the oven's circuit breaker to OFF, waiting 60 seconds, then switching it back to ON
• Check that no other high-power appliances (like dishwasher or electric heater) are running simultaneously on the same circuit
• Verify the oven is properly grounded and the power cord is securely connected to the wall outlet
• Review the oven's user manual to ensure all control settings are correct for your desired cooking mode
• If error persists after these steps, contact a certified Miele service technician in the USA—do not attempt to disassemble the oven