As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE WARNING MESSAGE CLIMBING THRU 10,000 FT. NOSE GEAR SHOWED AMBER THEN RED HASH MARKS AFTER 1 MINUTE. WHITE NOSE GEAR UP MSG RETURNED. COMPLIED WITH QRH, AIR RETURN TO DEPARTURE. ADJUSTED BOTH NLG DOWNLOCK PROXIMITY SENSORS CLEARANCE IAW AMM 32-61-05, OPS CK GOOD.