ok so i just got this car 2 days ago and i just got it scanned.

Its an 2002 Gp GT with 83k on it. the codes are:
p0443, u1301, p1637, c0345.

are these codes i should be worried about? i know one is an evap issue, data link 2 issue, wheel speed sensor but i cant remember the 4th one.
Any one of these going to really effect the car? easy fixes?

Thanks in advance guys!