Viking Dishwasher Error Code 4-5

Error code 4-5 on a Viking dishwasher signals a Fill Too Fast condition. The pressure sensor detected that the water level rose to the fill threshold at an abnormally rapid rate. The dishwasher stops the cycle when this occurs to prevent overfilling. The cause can range from an unlevel unit to a faulty pressure sensor or water inlet valve.

A reset may temporarily clear the fault display, but the error will return if the underlying cause has not been corrected. Resetting without addressing the root issue, such as leveling the unit or repairing a faulty component, will result in the same code appearing during the next fill cycle. Treat a reset as a diagnostic tool, not a fix.

If the fix is simply leveling the unit, there is no parts cost involved. If a pressure sensor or water inlet valve needs replacement, parts alone can range from roughly $25 to $150 depending on the specific component. Adding professional labor, total repair costs can range from $100 to $350 or more depending on the fault and your location.

Start by checking that the dishwasher is level on all sides using a bubble level, and adjust the leveling legs if necessary. If the unit is already level, inspect the pressure sensor, its connecting hose, and the water inlet valve for defects or debris. Replacing a faulty pressure sensor or inlet valve typically resolves the issue when leveling does not help.

The 4-5 error code is designed as a protective measure. The dishwasher halts the fill cycle specifically to prevent overfilling, which could lead to water leaking onto your floor. As long as the unit has stopped and is not actively filling, there is no immediate safety risk, but the issue should be diagnosed and resolved before running another cycle.