As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING "ENGINE CONTROL" LIGHT ILLUMINATED. GROUNDED - YES. #2 OK (#1 EEC BITE SHOWS MSG 73-11281) "B" CHANNEL WILL NOT PWR. RAN #1 ENG REF. B737-800 MM TASK 71-00-00-700-808-F00 - FAULT STILL ACTIVE AFTER RUN. REF B737-800 FIM TASK 73-28-TASK 805 #1 EEC REQ REPLACEMENT. M. SKRIVANIK 10241 05-05-2021. REMOVED AND REPLACED #1 EEC, INSTALLATION TESTS OK, REF AMM 73-21-60. ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL, SEAMC MARCUS NOTIFIED.