Dishwasher shows E13 and may report excessively high inlet water temperature.

Safety: Be cautious of hot water burns.

Steps:

• Check water connection: Verify whether the dishwasher is connected to hot or cold water. Gaggenau models typically allow hot water up to a specified maximum (e.g., 60 °C). If connected to a higher-temperature source, reconnect to a suitable supply.
• Measure inlet temperature: Run the tap into a container and measure with a thermometer. If above the allowed limit, adjust your water heater or connect to a cooler supply.
• Reset appliance: After correcting the water temperature, reset the dishwasher by turning off power for several minutes.
• Sensor check: If inlet temperature is normal but E13 persists, the temperature sensing (often via NTC or flow heater sensor) may be faulty and require replacement.