As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. DURING TAKEOFF ROLL RECEIVED FWD CARGO DOOR WARNING AT APPROX 80 KNOTS. TAKEOFF REJECTED AT APPROX 90 KNOTS. LIGHT EXTINGUISHED AT APPROX 80 KNOTS. VERIFIED CONDITION OF SENSOR & TARGET TO SENSOR GAP IAW AMM 52-70-02, WITH NO DEFECTS NOTED. PERFORMED FWD CARGO DOOR SENSOR TEST IAW AMM 32-60-00, WITH NO FAULTS FOUND.