As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEATHER RADAR FAILED IN FLIGHT. GROUNDED - YES. PER B737-800 FIM 34-43 TASK 801 WXR BITE TEST NORMAL NO FAULT NOTED. DUE PAST MX HISTORY, REMOVED & REPLACED WXR TRANSCEIVER PER B737-800 AMM 34-43-41. PERFORMED SYSTEM OPS TEST NORMAL REF AMM 34-43-00