Finally managed to change the G31/IAT sensor on the Leon today. Was a bit of a ball ache to do due to restricted access all round.
My hose clip pliers arrived this morning so I set about it even though I'm full of cold.
Back on the ramps, undertray off small 90 degree boost pipe off, then the nightmare of trying to take the black plastic pipe off which houses the sensor. Access is very tight and one of the two screws which secure the pipe to the sump so I tried another way.
Long story short I ended up persisting with the restrictions and got all the screws out and just removed the boost pipes as one piece.
Once I'd done this it was pretty straightforward.
Few photos of the work.
This is the pipe which houses the sensor
New and old
This one comes off to take the whole thing off in one and is a pita to get back on by itself which is why I did it the long way lol.
Everything together including the new sensor
Glad I won't have to do this again whilst I own this car lol.