As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG #1 VALVE CLOSED LIGHT ILLUMINATED WITH START LEVER IN CUTOFF. GROUNDED - YES. RAN #1 ENGINE REF B737-800 AMM 71-00-00-800-807-F00 AND AMM 71-00-00-700-819-F00. ALL ENGINE INDICATIONS NORMAL. #1 ENG VALVE CLOSED LIGHT OPERATIONS NORMAL REF B737-800 FIM 73-06 TASK 804: NO FAULTS EITHER. GROUND VERIFICATION SUCCESSFUL.