As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN DOOR OPEN AMBER CAS DISPLAYED AFTER STARTUP AND DURING TAXI. RETURNED TO RAMP AND APPLIED QRH PROCEDURE. AUDIBLE CLICK IS DETECTED AFTER DOOR HANDLE LATCHED BUT AMBER CAS REMAINS AND AMBER LIGHT FOR DOOR OPEN REMAINS ILLUMINATED. PERFORMED RESET PROCEDURE FROM INSIDE THE CABIN AND FAULT WENT AWAY. PERFORMED MULTIPLE OPS CHECK OF MED WITH NO DEFECT NOTED. POWER CYCLE AIRCRAFT AND PERFORMED 3 ANOTHER OPS CHECK OF DOOR WITH NO DEFECT NOTED. REFF AFM 3-510-2G