As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/CMH - FLT 6381 - DURING CLIMB AT 1230 HOURS ON 3-17-97, MADE AN UNSCHEDULED LANDING AT IAD DUE TO PASSENGER DOOR CAPTION WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSP AND CLEANED AND ADJUSTED MICROSWITCHES AND UPPER SHOOT BOLT, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (X)