As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TROUBLESHOOTING OF THE FUEL LL2 MAINTENANCE MESSAGE, ENGINEERS DECIDED TO EXPLORE THE SENSOR AND THE WIRING IN THE TANK. WHEN DRAINING THE FUEL, FOUND THAT THE MESSAGE DISAPPEARS WHEN THE AMOUNT OF FUEL LESS THAN 40 KG. NO FAULT FOUND. WHEN VIEWED FROM INSIDE THE TANK WE FOUND 2 ITEMS THAT ARE NOT DESCRIBED IN THE IPC. THEY WERE LYING INSIDE THE TANK FREE.