As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT (GEAR DOOR) EICAS MESSAGE ILLUMINATED. CAUSE UNDETERMINED. CMC FAULT ISOLATED PROBLEM TO NOSE GEAR DOOR SENSORS. SENSORS CHECKED AND CLEANED AND BITE CHECK ACCOMPLISHED. AT THIS TIME AIRCRAFT HAS ACMULATED 27 ADDITIONAL CYCLES WITH NO FURTHER REPORTS OF PROBLEM.