As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURN BACK, EICAS MSG GEAR DISAGREE AND GEAR DOORS DISPLAYED WITH GEAR HANDLE UP. LT GEAR LIGHT, GEAR AMBER LIGHT AND DOORS AMBER LIGHT ILLUMINATE. IAW AMM 32-20-09 FIM PROCEDURE THE PSBU BITE TEST WAS PERFOMED AND NO FAULT CODE AND MAIN NLG PINS WERE REMOVED.