Microwave shows E13 and stops; often associated with steam cooking or sensor cooking modes.

Safety first: Disconnect power before removing covers.

• Step 1 – Clean cavity: Wipe down the interior of the Thermador microwave, especially near the humidity sensor opening (often on the top or side wall). Remove grease and food splatter.
• Step 2 – Allow to dry: Leave the door open for several hours to allow moisture to evaporate from the sensor area.
• Step 3 – Reset power: Unplug or switch off the breaker for 5 minutes, then restore power and test a sensor-cook program.
• Step 4 – Inspect sensor (qualified persons): Remove the outer cover and locate the humidity sensor module. Check the wiring harness and connector for secure fit.
• Step 5 – Replace sensor: If E13 persists, replace the humidity sensor with a Thermador-compatible part.

Note: Avoid covering the sensor area with plastic wrap or foil during cooking, as this can cause false readings and errors.