As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLUE APU MAINTENANCE LIGHT ILLUMINATED. ACFT GROUNDED. INTERROGATED CDU. NO RECENT FAULTS OR HISTORY. CHECKED APU OIL QTY LEVEL. OIL LEVEL AT FULL. ACCOMPLISHED RESTART APU. NO MAINT LIGHT OR FURTHER FAULTS NOTED. APU START SUCCESSFUL IAW AMM 49-90-00-007.