My sister has a 99 Durango that has a check engine light on. I took my AutoEnginuity scan tool over, and it read error code P0505, Idle Air Control. The weird part was that the intake air temperature was reading at -9 degrees F, when the outside air was closer to 90. I'm not sure if I should replace the IAC if it's really just a sensor that's bad. Any ideas would be much appreciated.

 

No one has any ideas?