As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLAT FAIL CAUTION ON CLIMB OUT. MESSAGE CLEARED ONCE FLAP 1 SELECTED ON APPROACH (FLIGHT 3858 - FILED CLOSED) INTERROGATED CMC, FOUND NO ACTIVE FAULTS. BUT FAULT HISTORY FOR PREVIOUS LEG INDICATES 27811021ACE [SLAT SURFACE JAMMED/UNDERSPEED]. REFERENCING ERJ175 FIM 27-80-00, VERIFIED L & R PSU RESOLVERS ARE WITHIN ACCEPTABLE RANGE. R&R'D SFCL REFERENCING ERJ175 AMM 27-53-01. OPS TEST PASSED. FAULT HISTORY NOTED; NOTIFIED MXC. OK FOR CONT'D SVC.