As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. DURING TAKEOFF ROLL, ADVANCED THRUST LEVERS AND STABILIZED AT APPROXIMATELY 40% N1. PRESSED TO/GA AND RELEASED BRAKE, MASTER CAUTION ILLUMINATED FOR RT COWL ANTI-ICE AND TAKEOFF WAS ABORTED. REPLACED RT ENGINE THERMAL ANTI-ICE VALVE, IAW AMM 30-21-11. OPERATIONS CHECK GOOD.