F5 on a Viking DFUD means water is being counted while the inlet valve is off. Close the tap and call.
Model compatibility: Viking reuses codes across series and model years, so F5 / L5 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
F5 is valve leakage: more than 80 pulses detected with the inlet valve deactivated, so the running program is interrupted and the drain pump runs.
F4 is the shortage case. The valve leakage fault, F5 (L5 on LED models), is the opposite, water arriving without being called for: a Viking DFUD dishwasher’s flow sensor registers more than 80 pulses while the inlet valve is deactivated.
Why the machine reacts
A valve that is switched off while water still registers is not sealing, and that is a leak risk. What follows:
The manual says that on certain models the machine first attempts to remedy the leak itself.
The program in progress is interrupted.
The drain pump starts, so the water is pumped out.
What the owner does
The manual is direct about the owner’s part: shut the tap, then get in touch with service. A closed tap ends the water supply whatever the valve does. Cycling the main switch clears the code from the display, though it does nothing for a leaking valve.
Items listed
Two items: leakage at the inlet valve, and the flow sensor. The valve is the obvious suspect, and the sensor is named as well since a faulty counter might report pulses that are not real water.
F2: the excess-water fault, which also lists the inlet valve.
4-4: a current fault on the inlet valve in the newer series.
Viking dishwasher repair in Los Angeles
Close the tap, then call (310) 692-1112 for Viking dishwasher repair in Los Angeles. Report F5 and say the supply is shut off. The dishwasher repair page has further information.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Viking appliance?
Book a specialist visit for a clear estimate and approval before any repair.
