I've recently acquired a 1999 Volvo V40 2.0T

On running fault codes have oxy sensor, crank position sensor and MAP sensor.

So I thought I'd start with the Map.

Located it on the firewall, but nothing is connected to it.

Any thoughts or advise on where it should be plumbed, and why someone would have disconnected it?

I

I can't see any blanked pipes.