Dishwashing cycle starts for about 3 minutes then flashing LE light comes on and the machine stops. Why?

Taken From the Manual (https://media3.neff-international.com/Documents/9000816278_I.pdf)
If the appliance stops during dishwashing or does not start for no obvious reason, first run the Abort
programme function (Reset).
Terminating the programme (Reset)
1. Open the door.
2. Press START button 9 for approx. 3 sec. until all displays go out.
3. Close the door.
The remaining programme sequence for draining the residual water takes approx. 1 minute.

reset the panel by hitting normal-- heat dry NOT at the same time until all lights flash then push cancel and it should start. element is going bad

LE is for a overload error. Do the following:
1) Unplug machine
2) Drain machine
3) Open machine and rotate barrel clockwise 4 times and counter-clockwise 4 times
4) Plug in, power on, and run regular cycle

First try unplugging the machine for a few minutes and then retry a cycle. If you still get the LE error:

The Hall sensor (part number 6501KW2001A) has failed. The hall sensor is rather easy to replace, and is covered by a seven year part warranty (in the US). Take the back cover off. Take the big nut off and remove the motor rotor. Remove the bolts holding the motor windings. Remove the electric plug on the sensor and unclip it from the motor winding. Snap new sensor on and reassemble. Usually takes under a half hour. On a difficulty scale of 1 - 10, it might rate a 4. This should be a Fix-Ya for your machine, and at basically no cost!
In the US, find a service provider using your zip code at http://us.lgservice.com/index_b2c.jsp or call LG at 800-243-0000

Locked motor error (LE)

* The connector (3-pin, male, white) in the motor harness is not connected to the connector (3-pin, female, white) of stator assembly
* The electrical contact between the connectores, (3-pin, male, white) in the motor harness and 4-pin, female, white connector in the main PWB assembly is bad or unstable. Or the motor harness between the sator assembly and main PWB assembly is cut (open circuit).
* The hall sensor is out of order/defective.

***. If the hall sensor is defective, replace the entire motor.

First try unplugging the machine for a few minutes and then retry a cycle. If you still get the LE error:

The Hall sensor (part number 6501KW2001A) has failed. The hall sensor is rather easy to replace, and is covered by a seven year part warranty (in the US). Take the back cover off. Take the big nut off and remove the motor rotor. Remove the bolts holding the motor windings. Remove the electric plug on the sensor and unclip it from the motor winding. Snap new sensor on and reassemble. Usually takes under a half hour. On a difficulty scale of 1 - 10, it might rate a 4. This should be a Fix-Ya for your machine, and at basically no cost!
In the US, find a service provider using your zip code at http://us.lgservice.com/index_b2c.jsp or call LG at 800-243-0000

I shut off the dishwasher, held a few of the buttons together at the same time, let it sit for 5 minutes, then restarted it and it worked!

locked motor error....

Press "end of cycle". Plug off the wall. Code can be an indication of several issues. The most common cause is over-sudsing in the machine. Overloading the wash with too much laundry may also cause the LE error code. Lastly, a breakdown in the signal between the microprocessor and the motor may cause that error code. This can occur if there is a loose wire, see that all wires are tightened..........

This new....just call out LG to repair under warenty!!