If your Bosch dishwasher stops filling with water or you detect a leak under the front of the machine, the upper water fill hose leading from the air chamber to the sump has either split open or the O-ring seals on the ends of the hose are faulty. If you have moderate do-it-yourself experience and a few tools, you can save the cost of a service call by replacing the hose yourself without having to dismantle the appliance.
Turn off the power supply to the dishwasher by tripping the relevant breaker switch on the electrical control panel. Open the sink cabinet door and shut off the cold water inlet valve on the rear wall, under the sink.
Remove the two screws securing the lower dishwasher access panel, using a nut driver handle fitted with the correct size Torx bit. Set the panel aside.
Open the dishwasher door and remove the two front-panel retaining screws on the sides of the inner stainless steel cover. Grip the sides and close the door. Pull the front panel downward to release it. Set the panel aside.
Undo the two screws securing the thin stainless steel access panel to the upper edge of the opening. Unhook the panel from the wiring harness support. Set it aside. Pull the felt sound-dampening pad outward to reveal the upper water feed tube leading to the sump on the lower right of the opening.
Unhook the white ribbed water-feed hose from the retaining clip and on the front edge of the opening. Pull the hose straight out of the sump inlet tube. Take note of the hose configuration and withdraw the opposite inward-facing end from of the air chamber outlet on the upper left of the opening
Insert the correct end of the new hose into the air pressure outlet. Slide the other end into the sump inlet tube and secure the hose to its retaining clip. Tuck in the sound-dampening pad. Replace the stainless steel access panel and tighten the retaining screws securely.
Reposition the door panel and slide it upward into place. Lower the door, replace the two front-panel retaining screws removed earlier and tighten them securely.
Replace the lower access panel by inserting the screws and snugging them loosely. Adjust the height by moving the panel upward or downward on the elongated screw-hole slots so that the bottom edge of the panel clears the floor. Tighten the retaining screws securely.
Open the cold water shutoff valve under the sink and reset the power supply breaker switch. Load the Bosch dishwasher and run a full washing cycle to ensure that it’s working properly.