As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FUEL FILTER BY PASS LIGHT ILLUMINATED AFTER LANDING LIGHT WENT OFF WHEN ENGINE SHUT DOWN. PERFORMED FIM TASK 73 31 00 810 802 F00 FOUND DIFFERENTIAL PRESSURE SWITCH OPEN. REMOVED AND REPLACED NR 1 ENGINE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH PER M/M 73 34 01, OPS AND LEAK CHECKS GOOD. ETOPS PARTS VERIFICATION ACCOMPLISHED BY SEAMC.