As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ELEV PITOT LIGHT ILLUMINATED DURING CRUISE. GROUNDED - YES. INSPECTED AND FOUND CB OPEN C4 P18-3. PERFORMED CB WIRING INSPECTION REF B737-9 AMM 20-60-01. NO FAULTS FOUND. CLOSED CB C4. PERFORMED PITOT PROBES OPS TEST REF AMM 30-31-00. NO FAULTS FOUND.