As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DE-ICE PRESS CAUTION ILLUMINATED DURING FLIGHT. NOTICED LEFT INBOARD DID NOT ILLUMINATE INTERMITTENTLY. DIVERTED. LANDING UNEVENTFUL. REMOVED FROM SERVICE. INTERROGATED CDS WITH NO FAULTS. PERFORMED FUNCTIONAL CHECK IAW AMM 30-11-00-710-801. TESTED DEICE SYSTEM SEVERAL TIMES WITH NO DEFECT NOTED. INSP ALL LEADING EDGE BOOT WITH NO DEFECT NOTED. A/C OK FOR SERVICE. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.