As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENG AT FL 370 (4.0) LP. RAN CHECKLIST REDUCED TO 3.9 NO ICING CONDITIONS AT 10,000' VIB 2.0. RETURNED TO FIELD. LANDING UNEVENTFUL. REMOVED FROM SERVICE. GROUND RAN ENGINES. #2 ENG LP DID NOT EXCEED .1 AND HP DID NOT EXCEED 1.5. NO FURTHER DEFECTS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.