As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LG WOW SYS FAIL WARNING ON TAKEOFF DURING GEAR RETRACTION DECLARED EMERGENCY - RETURN TO ORD "TRANSFERRED TO NRWC 038-ORD-02484"-C/A-SEE NRWC 038-ORD-02484 FOR WORK ACCOMPLISHED. PERFORMED GEAR SWING IAW ERJ 175 AMM TASK 32-33-00. OPS CHECK GOOD.