As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FMC FAIL IN FLT. GROUNDED - YES. PERFORMED FIM 34-61 TASK 801 AND FOUND MULTIPLE FAULTS ARINC RAM, ASIC RAM, ASIC MICROCTL, MICROCODE CRC ON L/H FMC. PER FIM 34-61 TASK 837 THESE ARE HARDWARE FAILURES. REMOVED AND REPLACED L/H FMC PER B737-800 AMM 34-61-02.