Viking Dishwasher Error Code Moisture Sensor - water detection

This error means the moisture sensor in the base pan beneath the dishwasher tub has detected a condition equivalent to water being present in that area. The control board triggers this fault to stop operation and prevent further water damage. It can indicate an actual internal leak or a failed sensor sending a false signal. Inspecting the base pan for standing water is the recommended first step.

You should not run the dishwasher while this error is active. The error indicates a possible water leak beneath the unit, and continuing to operate it risks water damage to your flooring and cabinetry. The dishwasher's control board triggers this fault specifically to prevent further damage, so the underlying cause should be diagnosed and resolved first.

Repair costs vary depending on the cause. Replacing a moisture sensor alone is typically a lower-cost repair, often in the range of $75 to $200 including parts and labor. If the error is caused by a failed inlet valve, door gasket, or pump seal, costs can range from $150 to $400 or more depending on the specific component and labor rates in your area. Getting a diagnostic inspection before committing to repairs is recommended.

Start by pulling the dishwasher out far enough to inspect the base pan for standing water. If water is present, identify and repair the leak source, which could be the door gasket, inlet valve, pump, or hose connections. After repairs, dry the base pan completely before restoring power. If no water is found, the moisture sensor itself may be defective and need replacement.

A reset may temporarily clear the error code from the display, but it will return if the underlying condition has not been corrected. If water remains in the base pan or the moisture sensor is defective, the fault will trigger again once the unit is powered and the sensor is polled. The root cause must be resolved for the error to stay cleared.