Possible Causes
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
CHECK FOR ACTUATOR CIRCUIT TEST FAULT MESSAGES
CHECK FOR ACTIVE HVAC DTCS
MODE LINKAGE/DOOR BINDING
BLEND LINKAGE/DOOR BINDING
RECIRCULATION LINKAGE/DOOR BINDING
A/C-HEATER CONTROL MODULE
DOOR ACTUATOR DRIVER CIRCUIT OPEN
COMMON DOOR DRIVER CIRCUIT OPEN
DOOR ACTUATOR
LINKAGE/DOOR SEIZED
LINKAGE/DOOR BINDING
BROKEN ACTUATOR/LINKAGE/DOOR