If you just got the car someone may have just cleared the codes and it will require a drive cycle to get the codes to come up again . I agree with Kevin in that a trans flush is always a good thing. most people overlook the need to change the trans fluid It should have been done at 60k miles . Odds are it wasn’t . There are some other things to look for . Check vacuum lines for leaks . Check that the EGR valve is not stuck . Check your getting clean air (check the air filter ). Have the codes read at an auto parts store just to see if theres pending codes or to see if the car is in a IM ready state . If not you’ll have to drive it a bit before it actually castes a code. Hope this helps