As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF, WIND SHEAR WARNING. ABORT TAKEOFF (UNDER 60 KTS) WEATHER RADAR WENT INTO TEST MODE AFTER AP WARNING CLEARED . SECOND TAKEOFF ATTEMPTED. RADAR WIND SHEAR WARNING AGAIN. ABORT T.O. LOW SPEED . RADAR RETURNED TO TEST MODE AFTER WARNING CLEARED. GROUNDED - YES. PERFORMED B737-800 FIM 34-43 TASK 801 AND B737-800 AMM 34-43-00 NO DEFECTS NOTED. NO FAULTS NOTED ON FMC'S.