As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW RECEIVED A BLEED DUCT WARNING MESSAGE DURING FLIGHT AND DIVERTED AND DECLARED AN EMERGENCY. MAINTENANCE PERFORMED OPS TEST OF BLEED-AIR DETECTION AND WARNING SYSTEM NO DEFECTS NOTED. PERFORMED LEAK TEST OF BLEED-AIR DISTRIBUTION NO DEFECTS NOTED.