Hi Chaps

Can anyone help out a newbie here?
I have a P0401 code on my 97 I6 DB7.
I'm hoping this issue my be as simple as a bad vacuum line or possibly a clogged EGR valve.
My question is, can anyone advise on what I should try next to rectify the problem? Also (rather embarrassingly!) can anyone tell me where the valve and vac lines are?
Please accept my apologies if this subject has been done to death! I did search but could only find a couple of posts relation to V8 cars...
Any help, ideas, advice would be very much appreciated!

Thanks in advance...

 

I'm new new as well but I can tell you that the egr valve is on the back of the rear exhaust manifold. Th line for it runs from it to the underside of the throttle body. I'm sure others will be able to help more.