As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: AT BEGINNING OF TAKEOFF ROLL, MAIN GEAR STEERING AMBER EICAS AND A GEAR CONFIGURATION RED WARNING DISPLAYED EICAS MESSAGE. CONTINUED FOR APPROXIMATELY 1000 WITH WARNING ON AND ABORTED TAKEOFF AT APPROXIMATELY 40 KNOTS. MAINTENANCE FOUND LOOSE CONNECTOR AT RIGHT MAIN LANDING GEAR PCA STEER ACT AND TIGHTENED CONNECTOR PER FIM 32-53-02, NO FAULTS FOUND.