What was found
RIGHT MAIN FUEL QUANTITY INOP. GROUNDED - YES. INBOUND CREW REPORTS INDICATION CAME BACK ON LINE FOR RIGHT MAIN FUEL QUANTITY. VERIFIED BOTH FLIGHT DECK AND REFUEL STATION AGREE AND WORKING. ACCOMPLISHED FQIS BITE PROCEDURE CURRENT STATUS SHOWED NO FAULTS. INFLT FAULT/HISTORY SHOWED # 2 TANK QTY BLANK 28-41202 TANK UNIT LO-Z OPEN/GND. GROUND TEST PASSED NO FAULTS NOTED REF B737-800 FIM 28-41 TASK 801.