As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI IN ENGINES AT IDLE RIGHT OIL FILTER BYPASS LIGHT ILLUMINATED. REPLACED SCAVENGE OIL FILTER. NO DEFECTS NOTED. PERFORMED CDU CHECK INPUT MONITORING FILTER SCREEN FILTER BYPASS STATUS INDICATES A CONDITION OTHER THAN CLOGGED. ON EEC BITE TEST FOUND FAULT MESSAGE 79 21122 STEP3(C). REPLACED EEC & PERFORMED TESTS. TESTS PASSED.