As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI IN, AFTER CHANGING POWER SOURCE, SHIP POWER APU-NOTICED NR 1 ENGINE FILTER BYPASS LIGHT ILLUMINATED. ACFT GROUNDED. REMOVED & REPLACED ENGINE 1. J8 HARNESS IAW AMM 73-21-06-000-801-F00, PERFORMED ELECTRONIC ENGINE CONTROL TEST IAW AMM 73-21-00-700-804-F00 AND TEST 12-ACTUATORS TEST IAW AMM 71-00-00-700-804-F00, ALL TESTS PASS.