As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENG THRUST REVERSER AND LT ENGINE SEC STATUS MESSAGE ON DESCENT. REPLACED LT ENGINE EEC AND ENGINE CONTROL HARNESS. ENGINE PARAMETERS NORMAL, NO FAULTS OR MESSAGE, REACTIVATED THRUST REVERSER, OP'S CHECKED NORMAL, NO FAULTS NOTED.