GE front load Washer Model WCVH6400J1WW Error Code E30?

My washer has the Pause/Start button flashing and will not fill drum. I searched the internet and found many had problems with filter/plugged or suction to pump. Cleaned and removed all items and tore pump down, no problems found. Went through test mode and it fills and pumps water out. I'm getting error code 30 which is generically a pump problem. Could someone please give me some direction to continue trouble shooting.
Thanks,
Steve