What could be causing my Kenmore Ultra Wash dishwasher model 665.15812990 to leak water from the left side?
The first thing you should check is the door seal for any damages such as tears. If there are any tears, or rips, you may need to replace the door seal. Check to see if the door seal is dirty. If it is dirty, use a damp cloth to wipe all the way around the seal and around the door area that touches the seal when the door is closed.
Check the drain hose connection under the washer. make sure the hose hasn't separated from the drain housing. If the drain hose is not the leak spot, move on to the water valve assembly. Check the connection there thoroughly. Check the seals on the connection hose as well. If all checks out, the dishwasher may have a faulty water valve assembly.