Pan --
The likely culprit is something that got stuck in the trap on the lower right bottom of the washer. A number of us have been through this drill, Deek and DW included.
First, make sure all water is off and water pump is off too. You will remove the lower plastic panel on the washer (it will pull out with gentle force and is anchored with plastic clips -- no tools necessary) and you will find on the right side on the bottom of the washer that there is a drain pipe which can be easily reached there. You will find, most likely, that there is a sock or laundry sheet or something that got away from the regular laundry load you put into the washer and is clogging this port. Removing it will put you back in business with no further hiccups. I will be happy to be proven wrong on this, but I am putting my money on this solution. Also, check your owner's manual for the error code in the trouble shooting section. It will discuss just what I mention.
Have your bucket and towels ready for residue of water to come out when this surgery is undertaken. It won't be a lot but there will be water there in most likelihood. It is, however, a simple operation.
Good luck and report back to our Peer Review Board after you have completed the surgery.
Deek