As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF AND GEAR RETRACTION, RECEIVED GEAR INDICATIONS, LOUD NOISE AND VIBRATION FROM THE NOSE THAT INCREASED WITH AIRSPEED. RETURNED TO LAX. PERFORMED GEAR RETRACTION. FOUND THAT GEAR DOORS WOULD NOT CLOSE DUE TO A FAULTY NOSE GEAR A-HARNESS. REMOVED AND REPLACED LT MLG DOWNLOCK B-HARNESS AND NLG A & B HARNESS. PERFORMED NUMEROUS GEAR RETRACTION AND EXTENSION CYCLES. OPS CHECKED GOOD.