As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AIRCRAFT RETURNED TO HNL AND DECLARED AN EMERGENCY DUE TO A ENGINE #1 BLEED AIR FAULT. THE AIRCRAFT LANDED SAFELY AT HNL WITHOUT FURTHER INCIDENT AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE FOUND THE #1 ENGINE HIGH PRESSURE VALVE SENSE LINE BROKEN AND REPLACED IT PER AMM 36-11-49. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.