As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT OPERATIONS THE MAIN CABIN DOOR ANNUNCIATOR LIGHT WOULD NOT EXTINGUISH. THE SYS WAS TROUBLE SHOT & IT WAS FOUND THAT THE DOOR VENT SOLENOID HAD FAILED. THE SOLENOID PN 6711335-1 WAS REMOVED FROM SERVICE & A NEW UNIT WAS INSTALLED. OPERATION CHECKS SATISFACTORY.