As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IMMEDIATELY UPON RAISING LANDING GEAR OUT OF PHX, THE AURAL WARNING HORN SOUNDED AND DID NOT STOP UNTIL THE CIRCUIT BREAKER WAS PULLED. THE GEAR WAS RECYCLED AND THE AURAL WARNING STOPPED WITH CIRCUIT BREAKER PUSHED BACK IN. ALL INDICATIONS APPEARED NORMAL AFTER RECYCLE. INSTALLED SERVICEABLE LANDING GEAR ACCESSORY BOX. OPERATIONAL CHECK OK.