The 0303 means you have a misfire in your engine, #3 to be specific. Check for a bad wire, plug, etc. Also check the fuel pressure. 1700 is a tcm set code and it may go away if the other is taken care of or you have a trans problem. Engine codes must be fixed prior to any trans codes looked at though. Fix the 03 code clear codes and drive it it may or maynot set a code for the trans.