As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PYLON FLAP FAULT EOAP MESSAGE ILLUMINATED AT 100KTS ON TAKEOFF ROLL. AIRCRAFT TAKEOFF REJECTED AND RETURNED TO BLOCK AT GATE C-10. FOUND LEFT ELEVATOR POSITION SENSOR OUT OF RIG AND CAUSING INTERMITTENT ILLUMINATION OF PYLON FLAP FAULT. REPLACED SENSOR PER AMM. PERFORMED ADJ/TEST AND RETURN TO SERVICE TESTS. ALL CHECKED GOOD. OK FOR SERVICE.