Why don't u use a spanner I'm certain the deep sockets either aren't deep enough or foul the plastic. If they say wiring will cause the fault all the time, which it probably will, but they are basically saying that sensor is irrelevent to a standard car then....which to me, unfortunately, sounds like BOLLUCKS, if that sensor was gone it wouldn't cold start without the chip.......

As for the wiring, yes it is correct i believe, im more familair with it now.