As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OGG TO SJC DURING CRUISE WITH CENTER TANK FUEL LEFT MAIN TANK DROPPED TO ABOUT 400LBS THAN THE RIGHT TANK FUEL FLOW WAS SLIGHTLY HIGHER ON THE # 1 ENGINE VS THE # 2 ENGINE. GROUNDED - YES. FQIS BITE PASSES BUT SYSTEM HAS HISTORY AND FAULT HISTORY SHOWS PROCESSOR FAILED. REMOVED FUEL QUANTITY PROCESSOR UNIT IAW B737-800 AMM 28-41-81. PERFORMED FUEL QUANTITY OPERATIONAL TEST PER AMM 28-41-00-710-801, OPS CHECK GOOD NO FAULTS NOTED.