As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF WHILE CLIMBING THROUGH FL250 AND FL310, PILOT NOTICED CABIN PRESSURIZATION WAS INCREASE FOLLOWED BY A BLEED 2 FAIL CAS MESSAGE. PILOT DECLARED AN EMERGENCY AND DIVERTED. AS THEY DESCENDED TO FL250 THE MESSAGE CLEARED AND CABIN PRESSURIZATION NORMALIZED.