We had the no EV problem on a 2010 FFH and the dealer did the FSB 20-2142 fix after I showed it to them.
EV works now but only at low mph and not for very long. However, it seems to be improving. We’re thinking the cells were ‘off’ for several months and need to be regenerated and balanced and the car is making headway, albeit slowly. Anybody else having poor HVB performance after FSB 20-2142.