As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR PAX OPEN WARNING MESSAGE APPEARED AFTER START UP. CYCLED DOOR THREE TIMES, WARNING MESSAGE REMAINED ON. RAN ENGINES AND OPS CHECKED PAX DOOR NUMEROUS TIMES, NO WARNING MESSAGES APPEARED AFTER START. THERE WAS NO HISTORY ON THIS ISSUE. OPS CHECKED THE MAIN DOOR MICROSWITCHES IAW 52-71-20. OPS CHECKED GOOD