As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDIS 628 36-12 2006092 23NOV18 PHL CLOSE ON INITAL TAKE OFF ROLL HSV 2 FAIL EICAS MESSAGE DIS PLAYED. BROUGHT POWER BACK MESSAGE EXTINGUISHED BUT CAME BACK ON AT TAXI POWER. FACT 23NOV18 20:24 PHL UPON FOUND CANON PLUG ON HIGH STAGE VALVE DISCONNECT ED PERFORM OPS CHECK IAW AMM 36-11-02 OPS CHECK GOOD OK FOR SERVICE