Just had this pop up on the dashboard, last thing I expected to see on a PHEV.  Car drove a good distance a couple of days ago with the engine running, first time this error has popped up.    code from OBD Eleven is P1A9100   anyone had this with an iv?  Couldn’t find anything on the VW GTE forums.   pretty much runs in electric the whole time (<20mile journeys) except for longer journeys where hybrid mode is used.   Skoda assist coming out to see it with