As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, CREW RECEIVED A SLAT FAIL MESSAGE WITH SLATS AT POSITION 3. DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE. LANDED AND TAXIED TO GATE WTIHOUT INCIDENT. MX FOUND SLAT SKEW SENSOR AND HARNESS HAD FAILED AND REPLACED IAW AMM. ACFT IS GOOD FOR SERVICE.