My durango has had a check engine light for the p5050 code it's the air control valve I've replaced is 3 times and still keeps posing up and thoughts.

Also my drive Dore will unlock electricly but won't lock and my back back passenger door will do the opposite it will lock but will not unlock.

 

the iac issue could be wiring related, or PCM, i would start by checking end to end continuinty on the wire and for plug connections then go from there.

i would check the connections for the door lock actuators as well, although it is possible that they are worn out and need to be replaced.