As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR DOOR OPEN WARNING MSG WITH ASSOCIATED GEAR DISAGREE AFTER TAKEOFF ON RETRACTION WITHIN 2 SECONDS. CAPTAIN FOLLOWED QRH & RETURNED. GEAR DOOR & DISAGREE MSGS WENT OUT ON EXTENSION & LANDED NORMALLY. AN EMER WAS NOT DECLARED. FOUND PROX SWITCH PS14GA OUT OF LIMITS. ADJUSTED INTO LIMITS IAW AMM 32-61-05. OPERATIONS CHECKED LANDING EXTENSION & RETRACTION IAW AMM 32-33-00. OPERATIONS CHECKED NORMAL OK FOR SERVICE.