As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6378 - IAD-CRW - DURING CRUISE, MADE AN UNSCHEDULED LANDING AT IAD DUE TO PAX DOOR CAPTION WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND CLEANED AND LUBED PAX DOOR MICROSWITCH. OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (M)