As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASH PHX, ABORTED TAKEOFF AND RETURNED TO GATE REPORTING AN AILRON CONFIG EICAS MESSAGE. MX PERFORMED A FUNCTIONAL TEST OF THE AILRON SYSTEM ON THE GROUND BUT COULD NOT DUPLICATE THE PROBLEM AND RETURNED THE AIRCRAFT TO SERVICE. NO PARTS USED.