• Check that the circuit breaker serving the refrigerator hasn't tripped; reset if necessary
• Ensure the refrigerator is plugged in firmly and the outlet is functioning by testing with another appliance
• Verify that condenser coils on the back or bottom of the unit are not blocked by dust; carefully vacuum if accessible
• Confirm both the refrigerator and freezer doors close completely and seal tightly with no gaps
• Check that temperature control settings are not set too high; adjust to recommended 35-38°F for fridge section
• Remove any items blocking air vents inside the refrigerator compartment
• Inspect the back wall of the refrigerator for excessive ice buildup that may be blocking the sensor
• Perform a full appliance reset: turn off the circuit breaker for 60 seconds, then turn back on to allow the control board to reinitialize
• If error persists after these checks, contact a certified Miele technician as the temperature sensor likely requires professional replacement