As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON T/O PWS FAIL, WX ANTENNA CAUTION ON PFD. GROUNDED - YES. AIR TURNBACK - FOLLOWED B737-800 FIM 34-43 TASK 801. BITE PASSED PRECAUTIONARY - REMOVED AND REPLACED WEATHER RADAR RECEIVER/TRANSMITTER IN REFERENCE WITH B737-800 AMM 34-43-41-000-801, OPS TEST GOOD.