This problem is well known for me. I "repair" it usually twice in the year. There is small float on the booton of the machine. If there is too much water there float will pust switch and stops the machine with C3 code. Simply move washmachine to open space and tip it. The water will line from the machine and your repair is copleted.
By the way, do you know what the C2 code means?
Sasa, August 2007