i got a 06 grand cravan with dual a/c & heat .
with a/c on high front & rear in the fron the passenger side is cold & driver side is hot , rear is ice cold . I also noticed at night with the lights on only half of the tenp control lights up which is the pass, side please advise thanks....

 

Welcome to DF
First you need to have the HVAC ck for any codes. You could have a problem with the blend doors, actuator or the control head.

 

i had checked the obd and a code came up p0406 but thats came up for the egr , i had it replaced and and checked again no other codes came up. if its the door's or the accuator how do i check them and how do i get to them please advise thanks