As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING TAKE-OFF ROLL WITH POWER SET AND ABOVE 80KTS- RED CONFIG LIGHT AND EICAS RED FLAPS MSG CAME ON FOR 1 SECOND (HORN ALSO). FLAPS WERE IN 15 DETENT. REPLACED CONFIGURATION WARNING MODULE M620, ALL OPS CK NORMAL. AMM 31-51-04.