As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE TIRE PRESS ON EICAS AND STATUS PAGE. COMPLIED WITH CHECKLIST. #2 TIRE PSI WAS 91 PSI. ***EMERGENCY DECLARED*** REF: AMM 32-45-04-6-0 AND 32-45-01-4, UPON ARRIVAL FOUND NO. 2 TIRE RELAY TRANSFORMER RELAY UNSERVICEABLE - TO BE PLACED ON MEL CDL. DUE TO ACTUAL LOW TIRE PSI FOR NO.2 TIRE REMOVED AND REPLACED NO. 2 AND NO. 1 TIRES.