As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WXR RANGE DISAGREE & FAILED TEST. GROUNDED - YES. PERFORMED WXR BITE TEST; -4, +2, +3 FAULT CODES SHOWN. RE-RACKED WXR R/T, AS PRECAUTIONARY, REMOVED AND REPLACED WXR CONTROL PANEL. OPS TEST GOOD. GROUND FUNCTIONAL TEST PASSED. REF B737-900 FIM 34-43 TASK 816 AND FIM 34-43 TASK 807.