As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PUSHED BACK, STARTED NR 2 ENG , NORMAL START. PERFORMED AN ISOLATE/VENTALATE PROCEDURE ON NR 2 ENG . NOTICED NR 2 ENG START VALVE OPEN AND BOTH LIGHT BELOW IT (NO WORDS) FLASHING. PERFORMED QRH 7.11 THRU STEP NR 7, SHUTDOWN ENGINE. ACFT GROUNDED. REPLACED NR 2 ENGINE START VALVE. OPS CHECKED START VALVE REF MM 80-11-03.