I have an LE error code

I think you may be getting IE code which relates to water inlet problems. Either the water pressure is low or the inlet valve may not be working properly.
Refer page 21 in the user manual which can be dowloaded from this site

Product Support

But if it is LE code then see this page for suggested fix.
LG Help Product Support and Troubleshooting LG USA

LE is "Leak Error" there is a sensor in the motor compartment that detects moisture. this code is activated when a leak is detected in the motor compartment. you will need lg to come repair it as it is a notoriously difficult thing to fix permanently.

LE error code means the motor is resritcted or locked up. you can try to clean out the sump area but will most likely need to replace the Wash Motor

Le error is a motor error. either there is something lodged in the pump holding the blades or the motor itself needs to be replaced

I just had my LG dishwasher fixed. I told the repair man that LE light was comming on. Even over the phone the repairman said its probably broken wires on the door. Me being in construction for years looked around the door for wires. Anyway the repairman took off 6 screws around the door, took the cover off. You will see about 50 wires taped together. He pulled them aside and visually checked them one by one. Sure enough two were broken in two. He twisted them together put tape and he was gone. $87.50 Still Working!

LE means ( Motor error ) Condition : The motor is working abnormally. Possible cause : Wiring connections. The impeller of washing pump is locked. The rotor of washing motor is locked. The blade is locked.

You'll have to disassemble the unit and make sure nothing is stuck in the pump or locking the blade.

Otherwise you may have a loose wiring connector

LE IS A LOCKED MOTOR CODE CHECK FOR OBJECTS IN PUMP BUT THE HAD THAT PROBLEM IS THE PAST

While LE is the LG error code for "Motor Error": The Motor is working abnormally, it does not always mean that the motor itself has failed.
As you replaced the pump motor, are you certain that the Impeller of Washing Pump is turning freely? Next, is the Blade spinning freely?
If everything above is obviously not locked, the next item is the controller board. (PCB)
Hope that helps. Please report back with your findings! Good Luck.

Hello and welcome,

Display Condition LE = Motor Error

Possible Cause For Error Occurrence:

Wiring connection is OK?
The Impeller of Washing Pump is
locked.
The rotor of Washing Motor is
locked.
The Blade is locked.


Remedy:

Check the wiring connection.
Replace the cause of restriction.
Replace the Washing Motor.
Replace the PCB.

L2 error code is the same as an LE error code.  You have a problem with the sump motor assembly and needs to be addressed by a qualified LG technician.