As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
'L ENG HPSOV' UPPER EICAS MSG WITH LEFT ENG BLEED SELECTED OFF. MSG GOES AWAY WITH WHEN BLEED SELECTED ON. REPLACED L HPSOV, NO HELP. AFTER SEVERAL CYCLES WITH ENG RUNNING BLEED SWITCH ON NO DUCT PSI ALSO BLEED SWITCH OFF LIGHT ILLUMINATED.