As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TURNING CENTER FUEL PUMPS OFF, R MAIN FUEL QTY SHOWED 2060 LBS LESS THAN LEFT (L 7.48, R 5.42). AFTER ABOUT 5 MINUTES, R QTY ROSE BACK TO SIMILAR QTY AS L QTY. AFTER LANDING, QTY CURRENTLY L 4.79, R 3.37. FUEL WAS BALANCED WITHIN 200 LBS PRIOR TO LANDING. GROUNDED - YES. REMOVED AND REPLACED FUEL QUANTITY IND SYS PROCESSOR REF B737-900 AMM 28-41-81 OPS CHECK GOOD.