As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FMC DISAGREE RESET PERFORMED VIA QRH AFTER PUSHBACK/ KSEA. GROUNDED - YES. VERIFIED LAST FLT FMC R SAW FMC-L (PRES POS LAT RATE INTERMITTENT) FMC L SAW FMC -R (PRES POS LAT RATE INTERMITTENT) ACCOMP FMC BITE , BITE TEST SHOW OK REF. B737-900 FIM 34-61 TASK 801 & B737-900 AMM 34-61-00-710-026.