As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT AND WHILE ATTEMPTING TO START THE RIGHT ENGINE THE R STARTER EICAS W/ ASSOC VALVE DISCRETE LIGHT ILLUMINATED. A/C RETURNED TO BLOCKS (BTB). MTC DEFERRED R ENG START VALVE IAW B767 MEL 80-00-2-1 PLACARDS INSTALLED. MX PROCEDURES C/W. MBCB 04/25/26. A/C REMAINS NO ETOPS. AIRCRAFT RETURNED TO SERVICE.