Hi,

GE Potscrubber 2230

GE model#'s normally start with letters....
http://www.applianceaid.com/model.html
Some model# helps.

has a problem where it will run normally for about
33 minutes of the 44 minutes it's set for and then
quit with a C5 error code

A copy:
Dishwasher Fault Codes - From Late 1990's forward
C5 - Low water fill - Check for low water pressure to unit, usually an
indication of a bad water inlet valve

jeff.
Appliance Repair Aid
http://www.applianceaid.com/