Turn off the dishwasher's power in your home's breaker panel.
Turn off the water supply valve, which is connected to the water supply line running to the inlet valve. To turn off the valve, rotate the handle clockwise until tight.
Remove the screws securing the lower access panel on the front of the dishwasher, below the dishwasher door. Remove the panel.
Locate the water inlet valve, which is found on the front portion of the left side of the lower compartment. Place towels below the valve to catch any water remaining in the supply line.
Remove the water supply line from the water inlet valve by loosening the compression nut on the end of the supply line with an adjustable wrench.
Remove the brass elbow from the bottom of the water inlet valve using an adjustable wrench.
Remove the mounting screws from the front of the water inlet valve, and then remove the water inlet valve from the dishwasher frame.
Pull the solenoid wire connector or connectors off the water inlet valve, and then remove the valve.