Possible Causes
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
BINDING DRIVER CYLINDER LOCK SWITCH
DRIVER CYLINDER LOCK SWITCH SHORTED TO VOLTAGE
DRIVER CYLINDER LOCK SWITCH MUX CIRCUIT SHORTED TO VOLTAGE
WIRING HARNESS INTERMITTENT DEFECT
BODY CONTROL MODULE - DRIVER CYLINDER LOCK SWITCH FAILURE