What was found
"MAINT" LIGHT ILLUMINATED ON OVERHEAD PANEL. GROUNDED - YES. INTERROGATED OMF, FOUND FAULT MESSAGE FOR CONT CAB VLV. PERFORMED SYSTEM TEST PER B737-9 IFIM 21-61-00-810. OPS GOOD. FAULT CLEARED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
"MAINT" LIGHT ILLUMINATED ON OVERHEAD PANEL. GROUNDED - YES. INTERROGATED OMF, FOUND FAULT MESSAGE FOR CONT CAB VLV. PERFORMED SYSTEM TEST PER B737-9 IFIM 21-61-00-810. OPS GOOD. FAULT CLEARED.