I have a lgwm 2677hbm washer and got a code read

i have a lgwm 2677hbm washer and got a code read out de .i looked it up and it said drain error,i cleaned the drain filter but it sounds very loud during the rinceand spin cycle and i dont know if this noise is the pump or what.i stopped the washer because the noise has never been before.i just started a small load and wanted to see if and when it would stop and display the read out.i started a delicate load which starts at 34 mins.when it got to the rinse and spin cycle the drum would not spin and gave the same read out at 19 mins.the read out is drain error.help!