As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5836 - DURING BOS APPROACH RECEIVED AN A/SKID CAUTION MESSAGE AFTER EXTENDING THE LANDING GEAR, APPROACH WAS ABORTED AND MESSAGE CLEARED AFTER 15 SECONDS. SECOND ATTEMPT WAS WITHOUT DIFFICULTY. PERFORMED AN OPERATIONAL TEST OF THE A/SKID SYSTEM, DISCREPANCY COULD NOT BE DUPLICATED.