As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG. STARTER EICAS MSG APPEARED APPROX 35 SECONDS INTO START SEQUENCE ON #1 ENGINE. AICRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE ACCOMPLISHED OPERATIONAL TEST OF LEFT ENG START VALVE IAW AMM 80-11-02. NO FAULTS NOTED. OPS CHECK OK. AIRCRAFT RETURNED TO SERVICE.