What was found
LEFT BLEED ISO VALVE EICAS. RETURN TO GATE MI 1304Z. PERFORMED LEFT ISOLATION VALVE OPS CHECK IAW AMM 36-11-04, PARAGRAPH G, OPS CHECK GOOD AT THIS TIME.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT BLEED ISO VALVE EICAS. RETURN TO GATE MI 1304Z. PERFORMED LEFT ISOLATION VALVE OPS CHECK IAW AMM 36-11-04, PARAGRAPH G, OPS CHECK GOOD AT THIS TIME.