As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 FUEL TANK QUANITY INDICATOR BLANK IN COCKPIT. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 28-41. TASK 813 SYSTEM REPORTS FAULT CODE 28-41103. FQIS BITE PER 28-41 TASK 801 REPORTS SAME. GROUND TEST SUGGEST TANK OVER FULL TRANSFERRED 500 LBS TO CENTER TANK. FAULT CODE CLEARED FQIS CODE CLEARED FQIS AND BITE TEST PASSED.