WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ACTUATOR CIRCUIT TEST FAULTS PRESENT
OVERCURRENT FAULTS PRESENT
LEFT BLEND DOOR OR A/C HEATER HOUSING COMPONENTS WARPED, WORN, DAMAGED, BROKEN