As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINT LIGHT ILLUMINATED ON OVERHEAD PANEL. GROUNDED - YES. FOUND MAINT MESSAGE 36-11020 ENG 1 HPSOV IS NOT IN COMMANDED POSITION DETECTED BY IASC-LEFT. PERFORMED B737-9 FIM TASK 36-11-00-810-802 PERFORMED PNEUMATIC ENGINE ON SYSTEM TEST REF B737-9 AMM 36-00-00-730-801 TEST PASSED MAINT MESSAGE WAS AN INTERMITTENT FAULT MAINT LIGHT EXTINGUISHED NO DEFECTS NOTED AT THIS TIME.