How to Troubleshoot & Replace Bosch AP4927070 / 00622058 Water Inlet Valve

The fix was pretty simple once the problem was known. I pulled the dishwasher out and then I noticed the ripple in the pan that collects the water an I could see it was coming from the inlet valve. Once I knew this was the problem, I ordered the part from AppliancePartsPros and it arrived fast. While the dishwasher was pulled out, I turned off the water and tipped it forward to drain the water (have towel to catch it and clean up). I reinstalled the dishwasher since the repair can be made from the front by removing the kick plate. When the part arrived it was very easy replacement, first make sure the power and water is off. - Remove the kick plate (2 phillips screws) - Disconnect the water supply line from the inlet valve - The inlet valve is at the left side, remove the (2-T20 screws) - Remove the inlet valve - this actually required moving and positioning to get it to come out. - Pull out the electrical connection - Using pliers, compress the clip on the water line and slide back. - Remove the water line - Remove the supply line connection elbow from the failed part. - Remove the old teflon tape from the elbow and wrap with new teflon tape. - Install the elbow in the new inlet valve, leaving it at at about 4 o'clock position. - Replace the water line inside the dishwasher and use the pliers to slide the clip back to position. - Insert the electrical clip into the inlet valve. This only goes one way. - Position the inlet valve so the 2 screw holes are lined up and secure with the 2-T20 screws. - Connect the water supply line (do not over tighten) - Connect the power (plug it in) - Turn on the water and check for leaks at the supply line connection. - Turn on the dishwasher and run a cycle - checking for any leaks from the water inlet valve. - If you did not drain the water, you may still have the pump running until the water evaporates and the float switch lowers and turns off. 

Removed water out of basin, down to the last inch.. Watched water rise slowly, and felt temperature, warm. This told me it was supply water. Ordered replacement part, two days just as mentioned, Removed as per video. Also choose to replace the waste line check valve, to affordable not too. Working great, except the wood floor not so happy with. One thing at a time. Thanks 

I noted that others had a similar experience. The spray arms were free and clear and it was noticeable the circulation pump was working. The only part that was determined to be bad was the water inlet valve. My options were to either replace this part at a minimal cost or replace the dishwasher. I ordered my part from appliancepros.com and was there by day 2. Replacement took about 15 minutes. Dishwasher works like new again! 

Replace Water Inlet Valve 

Replaced the solenoid valve. 

I watched the excellent video of how dishwashers work, cleaned the filters, moved the soap door around, did a test run - fail. I tested the electronics of the valve- it passed. I added water from a pitcher as suggested and isolated the issue to the valve. Ordered the <$30 part, installed it and did my first wash run. All seems to work, without any service calls. Replacing the valve only requires a screwdriver, 2 wrenches, some teflon tape and pliers to open the tubing clasp. Small hands help too. 

I checked the internet for the issue and found that Bosch dishwashers have a leak detection feature built into the plastic pan under the dishwasher. A float made of styrofoam will rise if water drips into the plastic pan. After the float rises it turns on a switch, which prevents the dishwasher from running, except to drain. The internet also mentioned a common leak problem is caused by a faulty water inlet valve. I noticed the plastic drain pan for my dishwasher had water in it. I also noticed water was dripping from the body of the water inlet valve. I ordered the part from AppliancePartsPros and replaced the water inlet valve when the new part arrived. This new water inlet valve solved the problem and the dishwasher works fine now. 

Checked solenoid with a multimeter and the circuit was open. Ordered new valve and replaced old valve. Dishwasher is working again. Tutorial on how to check and replace was helpful. I could not find my exact model number dishwasher at other part suppliers. Very pleased with overall experience. 

Removed faulty valve and replaced with new part from AppliancePartsPpros.com Had to pull dishwasher out of cabinet to repair but was easy 

Replaced with new valve. Not a lot of space to work with under dishwasher but replacement took about 15 minutes to take the old part off and 15 minutes or so to install the new part.