Dishwasher overfills or water runs continuously into the tub; E16 is displayed.

Safety: Immediately close the water tap and disconnect power to prevent flooding.

Steps:

• Check if water stops with tap closed: If water continues to enter even with the tap closed, there may be backflow from plumbing; consult a plumber. If it stops, the inlet valve is likely stuck.
• Inspect inlet hose: Remove the AquaStop hose and check for debris at the valve screen. Clean carefully.
• Test valve operation: With the hose removed and power applied (only if qualified), verify that the valve opens and closes correctly when the dishwasher calls for water.
• Replace AquaStop / inlet valve: If the valve leaks when de-energized or does not close fully, replace the complete AquaStop hose or inlet valve assembly with the correct Gaggenau part.
• Check control and wiring: If the valve is mechanically sound but remains energized, inspect the wiring and control board for a stuck relay or short.