As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ELEVATOR PITOT CAUTION LIGHT AND ILLUMINATED AFTER #1 ENGINE WAS STARTED. GROUNDED - YES. IAW B737-9 AMM 27-31-94 LEFT ELEVATOR PITOT PROBE REMOVED/REPLACED. SYSTEM LEAKED CHECKED OK IAW AMM 27-31-17 AND HEATER TESTED OK IAW AMM 30-31-00.