As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF ASA TC 78273000 IN W/O 1934974 FOUND FAULT 79-31341, OIL PRESS SIGNAL DISAGREE (SHORT TERM) AND 79-11091 ENGINE OIL PRESSURE SIGNAL OUT OF RANGE (SHORT TERM) ON ENG #1. REF ASA L/P 60382685. GROUNDED - YES. INTERROGATE FMC FOR ENGINE #1 EXISTING FAULT AND FAULT HISTORY, FAULTS ARE ACTIVE. REMOVED AND REPLACED OIL PRESSURE. REF B737-800 AMM TASK 79-32-01-400-801-F00.