Hello
It sounds like you have a re-circulation air blend door actuator that is not working. To confirm lets remove the unit to check the operation. here is a guide that will help walk you through the steps and diagrams below to how you how on your car:
https://www.2carpros.com/articles/replace-blend-door-motor
1 - Mode Actuator
2 - Air Plenum
3 - Evaporator Temperature Sensor
4 - Mode Actuator (Side View)
5 - Air Temperature Actuator
6 - Recirculation Actuator
7 - Blower Motor
8 - Blower Module
9 - X202
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Images (Click to enlarge)
Jun 4, 2019 at 12:24 PM