Error Code E:16

Error Code E:16: Water Meter Signal Received Without Inlet Valve Activation

This specific error code, E:16, indicates a discrepancy between the electronic control system and the water management components within your appliance. This typically applies to dishwashers manufactured under the Bosch, Siemens, Neff, Constructa, and Gaggenau brands, particularly models within the GV640 series.

The core issue signaled by E:16 is that the main control board is detecting active feedback signals originating from the integrated water meter or flow sensor. Crucially, this signal is being received while the primary water inlet valve—the component responsible for opening to allow water into the tub—is registered as not activated (i.e., it should be closed or is electrically signaled to be off).

This situation points toward a specific set of possibilities concerning the water inlet system:

1. Inlet Valve Electrical Fault/Stuck Open: It is highly probable that the inlet valve itself is defective. If the valve is faulty, it might not be closing completely, leading to a condition where the system registers water flow (via the meter) even when the electrical command to open the valve has not been given, or it may be stuck partially open allowing unintended water ingress or feedback.
2. Water Meter/Flow Sensor Miscalibration or Fault: Although less common, the signal feedback mechanism (the water meter or flow sensor) itself may be sending spurious or erroneous data to the control board, indicating flow when none should be occurring based on the valve’s status.

Recommended Troubleshooting Steps:

To resolve Error E:16, the primary focus must be on diagnosing and potentially replacing the water inlet valve assembly:

• Inspect the Water Inlet Valve: The inlet valve controls the ingress of fresh water into the dishwasher tub. You must carefully inspect this component. This usually involves safely disconnecting the dishwasher power and water supply, accessing the bottom or rear panel where the valve is mounted, and checking its physical integrity and electrical connections.
• Electrical Continuity Check: If you possess appropriate diagnostic tools (like a multimeter), test the electrical coil and contacts of the inlet valve. If the valve is receiving the correct voltage when commanded ON, but fails to open fully or close properly, or if it shows electrical failure, replacement is necessary. A valve that fails to close completely is a strong indicator of this error state.
• Verify Wiring Integrity: Ensure the wiring harness connecting the inlet valve back to the main electronic control board is securely seated and free from damage, cuts, or corrosion, as poor connectivity could mimic a faulty valve signal.

If inspection confirms the inlet valve is defective and not closing completely, the unit must be replaced to restore proper water control and error-free operation.