As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"PERF INIT" FUEL NOT AUTO UPDATING. GROUNDED - YES. CONFIRMED FAULT, FMC PERF INIT PAGE SHOWS NO FUEL QTY. TROUBLESHOT REF B737-800 FIM 28-41 TASK 819 TO DEFECTIVE FUEL QUANTITY PROCESSOR UNIT. REPLACED SAME PER B737-800 AMM 28-41-81, OPS CK NML REF AMM 28-41-00-710-801.