As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6381 - IAD-CMH - AIRCRAFT MADE AN UNSCHEDULED LANDING AT IAD DUE TO LEFT OIL PRESSURE INDICATION DROPPED TO ZERO. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED PRESSURE TRANSDUCER. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)