As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4055 - ON TAKEOFF ROLL. CREW REPORTED AN E2 FIRE WARNING INDICATION. ABORTED TAKEOFF. RETURNED TO GATE AND NO FIRE WAS NOTED. REMOVED AND REPLACED NR 2 FIRE CONTROL MODULE IAW EMB MM 26-11-00. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (X)