As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG #2 DRIVE LIGHT NOT ILLUMINATED AT GATE WITH ENG NOT RUNNING. DOES PRESS-TO-TEST. GROUNDED - YES. REMOVED AND REPLACED #2 IDG REF B737-9 AMM 24-11-11. OPS CHECK AND LEAK CHECK GOOD. LAMPS REINSTALLED . DISCONNECT SWITCH GUARDED AND SAFETIED.