As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LEFT ENGINE START, AN EICAS MESSAGE FOR THE LT ENG BLEED OFF. RETURN TO BLOCKS. REMOVED AND REPLACED THE LEFT ENGINE PRVC IAW AMM 36-11-09, PERFORMED A LEAK CHECK IAW AMM 36-11-09 AND ENGINE RUNS IAW AMM 71-00-00. OPS AND LEAK CHECKED OK.