Hi Pacplyer, this from the AAIB Special Bulletin issued in May...
Parameters recorded on the Quick
Access Recorder, Flight Data Recorder and non‑volatile
memory from the Electronic Engine Controller (EEC)
indicate that the engine control system detected the
reduced fuel flow and commanded the fuel metering
valve to open fully. The fuel metering valve responded to
this command and opened fully but with no appreciable
change in the fuel flow to either engine.
Hope this helps....