As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5178 - DURING TAKEOFF ROLL AT BOS RECEIVED A LT WING ANTI-ICE CAUTION MESSAGE, ABORTED TAKEOFF AND RETURNED TO THE GATE. PERFORMED AN OPERATIONAL CHECK OF THE WING ANTI-ICE SYSTEM, DISCREPANCY COULD NOT BE DUPLICATED BY MAINTENANCE.