Why is my lg dishwasher leaking and not draining completly

LG has programmed in the E1 error code to indicate when the drain pump is running, it is not receiving the back pressure it needs. This is most likely an indication that there is a water leak in the draining system.
https://removeandreplace.com/2017/03/06/lg-dishwasher-error-code-e1-how-to-clear/

The manufacturer has assigned the E1 error or fault code to indicate that when the drain pump is running it is not experiencing the back pressure it expects. This is usually an indication that there is a water leak in the drain system. Check all hoses and connections. Check under the dishwasher for any major leak. If all checks out, be certain there is a proper loop in the drain hose to prevent siphoning. Finally, if the problem persists, the drain pump itself might be defective, this is not repairable and will have to be replaced.

Hi,
Here is a tip that I wrote about dishwashers and them leaking.

Leaking Dishwasher

heatman101

Hi,

Here is a tip that I wrote about dishwashers and them leaking.

Leaking Dishwasher

Dishwasher Problems - Water will not drain out

heatman101

You will have to completely uninstall the dishwasher to replace the drain hose assembly.

Part# AEM69493803.

Once the unit is out of the cabinet drain hose replacement is fairly easy.

The LE stands for Leak Error. If you have confirmed that there is no actual leak, then the next thing to check is the routing of the drain hose. It is very common that that hose does not have a "high point" in the hose and the water is being siphoned out of the dishwasher and down the drain.

The quickest way to solve the problem is to raise the drain hose as high as possible under the counter and attach is securely. The BEST way to fix the problem is to install an Air Gap in the drain circuit (almost free at any real hardware store) but drilling may be needed.

Measure the electric resistance of the Drain Motor. (Value should be 20-40 Ohms) If it is out of spec, replace it.
Please reply with what worked best. Thanks!

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found the problem. the leak was in the drain hose in the upper part of the washer