As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 AFT FUEL LOW PRESSURE LIGHT ILLUMINATED ON PUSHBACK. ACFT GROUNDED. FOUND R18 GFI RELAY WITH RESET BUTTON TRIPPED. RESET THE R18 IAW FIM 28-22 TASK 803. DISCONNECTED THE NR 1 AFT FUEL PUMP CONNECTOR D70. INSPECTED FOR DAMAGE. NO DEFECTS NOTED IAW FIM. REMOVED AND REPLACED THE NR 1 AFT FUEL PUMP MOTOR IMPELLER IAW AMM 28-22-41. OPS CHECKED GOOD.