As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TO ROLL AT APPROXIMATELY 60 KTS LEFT COWL ANTI ICE CAUTION ILLUMINATED. REJECTED TAKEOFF ROLL. GROUNDED - YES. REMOVED AND REPLACED #1 ENG ANTI ICE VALVE REF B737-9 AMM 30-21-11-000/400-801 AND B737-9 IFIM 30-21-00-810-811 OPS CHECKED GOOD AND NO LEAKS NOTED.