Emissions....03 dodge ram

The codes on my dodge ram have shown p0440 and p0456. I have been told one of the problems could be the natural vaccum leak detector pump. The other is the code for a small leak detected in the line. I have found the leak in the line but could this be the overall problem? Would this bring up two codes for the same problem or the chances are that is two different problems? The nvld and the leak in the line? Thanks for any help

Always correct the problem your sure off clear the codes and test drive. If you get the other code fix it at this point.