As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU OIL QUANTITY STATUS MESSAGE ILLUMINATED. RIGHT GENERATOR PREVIOUSLY DEFERRED. SUPPLEMENTAL DATA UPDATE ACCOMPLISHED APU OIL CONSUMPTION CHECK. APU WAS CHECKED ONCE FOR OIL CONSUMPTION AND EXTERNAL OIL LEAKS, AND NO DISCREPANCIES WERE FOUND. SUSPECT THE OIL LEVEL SWITCH TO BE GIVING ERRONEOUS INDICATION. REPLACED OIL LEVEL SWITCH.