Can my garbage disposal affect my dishwasher?

Yes, if your dishwasher is not draining correctly, your garbage disposal could be the cause. When your dishwasher finishes its cycle, it drains all the dirty water through the garbage disposal. If your garbage disposal is new and the plug is still inserted, it won’t allow this water to pass through, causing it to back up into the dishwasher. Removing the plug from the disposal can resolve this issue.