As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF AT ABOUT 50 KTS, EXPERIENCED AN ACCESS BUS CAUTION MESSAGE AND ABORTED THE TAKEOFF. AFTER PULLING OFF THE RUNWAY, ALL SYSTEMS APPEARED NORMAL EXCEPT LEFT AND RIGHT AOA HEAT. POWERED DOWN AND POWERED UP AIRCRAFT AND ALL SYSTEMS SEEM NORMAL. DEPOWERED PLANE AND RESET. COULD NOT DUPLICATE PROBLEM.