As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSG # 78-21542 #2 ENG EACH REVERSER SLEEVE HAS ONE POSITION SIGNAL OUT OF RANGE(SHORT TIME FAULT). GROUNDED - YES. PERFORMED WIRE CHECKS TO LVDT FROM DP0404 PINS AA,GG,E- AND,F- PER B737-800 WDM 78-35-21 PAGE 101. NO DEFECTS NOTED AND DOES NOT SHORT TO GROUND. DUE TO EEC OVERHAUL HISTORY AND RECENCY OF FAULTS ON A DIFFERENT ENGINE, REMOVED & REPLACED EEC PER B737-800 AMM 73-21-60-000/400-801-F00.