As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - FLIGHT 2232 - ICE DETECTOR CAUTION IN CLEAR AIR AT 22,000. DIVERTED TO SEA AND ACCOMPLISHED A UNEVENTFUL LANDING. MAINTENANCE CHECKED THE CDS SYSTEM WITH NO FAULTS LOGGED. AIRCRAFT RETURNED TO SERVICE. FUNCTIONAL CHECKS GOOD. NO PARTS REPLACED.