My LG washing machine is flashing PE

It is normal for a washer to spin and spray fresh water over the clothes during rinse period. I don’t know why it would leave clothes wet. Look at your options. See if you can turn off rinse n spin to just spin.

blocked or faulty drain pump

if you go to spin only cycle, does it drain and then spin? if yes, then most likely control board.

check pump

The PE error or fault code indicates that the machine is overfilling with water. This washer is equipped with a water level pressure switch. As the machine fills, the pressure increases on the switch, at the set pressure, the switch cuts power to the water inlet valve and the water stops flowing into the washer. If the pressure switch fails to sense properly, or the water inlet valve fails to shut off the unit can overfill. This situation can also be caused if the machine does not drain properly. First, check to see if water ever enters the machine when it is turned off. If so, replace the water inlet valve. Next, check the drain line to be sure it's not clogged or kinked. Next, check to see if the drain pump is working properly and removing the water from the previous cycle. If all of those check out, you may need to replace the pressure switch.

Broken or has come off. Drive belt

What is the model number?

Is there a lot of water inside like more than normal? That is a pressure sensor error. Check pressure hose inside the washer. It is a small hose about 5/16" diameter connected to the tub and pressure switch. If there's a hole in it the air scape and the pressure switch will not turn off the water. The control board detects the problem and stop will show error code.

See if you are overfilling you machine or the load is out of balance. Even try running the machine empty

Suggestion: Your wash could be overloaded; put in clothes within machine's capacity. What is written in your manual's max clothes capacity. If your heater is on; switch off machine and wall plug. Reset the machine with the heater on minimum & resume your normal cycle.