As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
START VALVE OPEN LIGHT ILLUMINATED ON THE CENTER DU FOR NR 1 ENGINE. GROUNDED - YES. PERFORMED FIM 80-07 TASK 809, FOUND CONTINUITY BETWEEN PINS 4 AND 5 OF START VALVE. REMOVED AND REPLACED START VALVE REF AMM 80-11-03. OPS CHECK AND LEAK CHECK GOOD.