As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN TANK #2 AFT FUEL LOW PRESS LIGHT ILLUMINATED IN CLIMB & CRUISE FUEL QUANTITY 8.5 IN TANK. GROUNDED - YES. REMOVED AND REPLACED MAIN TANK #2 AFT BOOST PUMP MOTOR IMPELLER PER B737-800 AMM 28-22-41. LEAK CHECKED AND OP'S CHECKED GOOD. ALL INDICATIONS NORMAL.