As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW DECLARED EMERGENCY DUE TO SLAT DISAGREE MESSAGE. ON APPROACH TO MSP BRAKING ACTION WAS CHANGED FROM GOOD TO POOR DUE TO SNOW AND THE CREW DECIDED TO DIVERT TO STL. LANDING WAS UNEVENTFUL. REF FIM 31-71-00-1, PSEU SHOWS LT SLAT NR 4A PROX SENSOR AT FAULT. REPLACED LWS4A SENSOR PER MM 27-84-03-4. OPS CHECK GOOD.