As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. LAX-HNL FLIGHT RETURNED TO LAX. OVERWEIGHT LANDING UNEVENTFUL. DURING CLIMB, THE NR 2 ENGINE BLEED REPORTED A FAULT. REMOVED AND REPLACED BLEED REGULATOR PRESSURE TRANSDUCER IAW AMM 36-11-16 (AALA20161229015) AND SENSE LINES IAW AMM 36-11-00. LEAK AND OPERATIONAL CHECK GOOD.