I've had my CEL on for a little while, and finally managed to pull the codes (courtesy of the local mechanic). I'm getting codes for the O2 sensors (which I just replaced) and for the 'intake manifold control valve'. I didn't do the translations of the codes myself, but there are what the mechanic got :

PO 155
P1519

I'm looking in my Haynes book and I see no mention of an 'intake manifold control valve' and the first code isn't in my list either.

Also, I can't find the list of codes that I've seen on here before either, so I can double check.

Here's the details :

98 Contour SE, Duratec 2.5L V6, standard transmission

Help me ! I've got a girl I need to pick up this weekend =P