The IE fault code occurs when the washer fails to fill properly. Check the hot and cold water inlet valves: they should be turned on all the way. It is not recommended to use Floodsafe fill hoses (see the image below). If you are using these, replace them with usual ones.
Check the inlet water screens (on the washer’s back) and remove debris or foreign objects, if any.
Check the fill hoses for clogs. To do so, disconnect them from the washer and put the ends in a bucket, sink or bath. Open the taps briefly to check the flow and water supply pressure.
Check the drain hose and make sure it is installed well. If not, the water may be leaking through the drain system. Make sure the drain hose is at least 39” high, and its end is not way too deep into the stand pipe.