As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FO PITOT HEAT CAUTION LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. NFS OMF INDICATES NO FAULTS LAST LEG. ACCOMPLISHED PITOT PROBE DETAILED INSPECTION (FO'S) PER B737-9 AMM 34-11-01 W/ NO DEFECTS OBSERVED. ACCOMPLISHED APPLICABLE SECTION OF PITOT PROBE HEAT SYSTEM TEST PER AMM 30-31-00-730-801 PARAGRAPHS E, F, AND G. (2) W/ NO DEFECTS INDICATED. ETOPS GROUND VERIFICATION SUCCESSFUL.