LG Dishwasher will not clean

I am so discouraged with LG products. I had my washing machine of 3 years go out on me a few months ago, and now my dishwasher. No one in my area wants to repair LG products. My dishwasher is also 3 years old. It keeps coming up with a code of LE. Does not wash the dishes at all. Throws food around onto other dishes. There is not much for it to clean because I wash dishes in sink and then put into dishwasher for an extra wash and steam. Sometimes the kids’ get one by me and put in a sub-dirty dish. Well the food goes everywhere. Even on power scrub and extra rinse, plus sanitary cycles. My husband is looking at the water valves. Any advice???
Kelli