Safety first: Unplug the microwave before cleaning internal sensor areas.

Clean cavity and sensor area: Remove grease and steam residue from the interior, especially near the sensor opening.
Use correct containers and quantities: Follow Telefunken's instructions for sensor cooking regarding dish type and food amount.
Reset control: Perform a factory reset if available in the settings menu to restore default calibration.
Replace humidity sensor: If performance remains poor, the sensor may need replacement.

Microwave auto-cook or sensor programs consistently overcook or undercook food.

Possible Causes