As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WING CENTER FUEL TANK GAUGE INOP. GROUNDED - YES. ACCOMPLISHED REMOVAL AND INSTALLATION OF WING CENTER FUEL TANK INDICATOR PER B737-800 AMM 28-41-61/401, OPERATIONAL CHECK GOOD. NO SPECIAL PROCEDURES TO REVERSE. PLACARD REMOVED. GROUND VERIFICATION SUCCESSFUL. 4 C/B OPENED, COLLARD, AND RESET.