What causes a dishwasher water inlet valve to fail?

Common causes include mineral buildup from hard water, electrical solenoid failure, or general wear and tear over time. Debris can also clog the internal screen, restricting water flow.

How can I tell if the water inlet valve is completely closed?

If the water inlet valve is completely closed, the dishwasher will not fill with water at all during a cycle. You might hear a humming sound from the valve if its solenoid is attempting to open but is stuck or faulty.

Is it possible to clean a dishwasher water inlet valve?

While the small screen filter on some valves can be carefully cleaned, the internal components of the valve are generally not serviceable. If the valve itself is faulty, replacement is typically required.

Dishwasher Water Inlet Valve Replacement Guide

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🏆 RECOMMENDED PART

BOSCH 00628334 Dishwasher Water Inlet Valve (Replaces 628334) Genuine Original Equipment Manufacturer (OEM) Part

This part is compatible with models including; SHPM98W75N/10,SHPM78W56N/01,SHXN8U55UC/01,SHP878ZD5N/18,SHXN8U55UC/06,SHP65T55UC/09,SHP65T55UC/07,SHP65TL5UC/01,SHP65T55UC/02,SHPM65Z55N/01,SHE53T56UC/02,SHEM63W52N/01,SH...
This Is A Manufacturer Substitution. Part May Differ In Appearance But Is A Functional Equivalent To Prior Parts Including; 10023852
Genuine Original Equipment Manufacturer (Oem) Part. Compatible Brands: Bosch,Thermador
This Water Inlet Valve (Part Number 00628334) Is For Dishwashers
Unplug The Dishwasher And Shut Off The Water Supply Before Installing This Part

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What the 628334 does

The water inlet valve controls the flow of water from your home's water supply into the dishwasher tub at the appropriate times during a wash cycle.

Symptoms when this part fails

Dishwasher not filling with water
Dishwasher overfilling or running continuously
Water leaking from under the dishwasher
Dishwasher making a humming noise but not filling

Compatibility

Fits the Bosch family. Specifically:

Any unit originally equipped with OEM part number(s): 00628334.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Also replaces: 00628334

Tools you'll need

Phillips head screwdriver
Flathead screwdriver
Adjustable wrench
Pliers
Towels and a bucket

Difficulty: Moderate · Time: 30-60 minutes

How to install the 628334, step by step

Disconnect power to the dishwasher at the circuit breaker.
Turn off the water supply to the dishwasher.
Remove the lower access panel or toe kick from the dishwasher.
Disconnect the water supply line, drain hose, and electrical connections from the old valve.
Remove the mounting screws or clips securing the old water inlet valve.
Install the new water inlet valve, ensuring all connections are secure.
Reattach the access panel and restore water and power.
Test the dishwasher for proper operation and leaks.