Hi all Crossfire owners,
Now at last I think I got to fix the MIL light up problem.
It looks like some earlier owner has mixed the left and right cable to the downstream O2-sensors.
I have some photos and more deeper information text here on my homepage if you find it interesting or have similar problems:
2005 years Chrysler Crossfire: Emission control system, page IV
Thanks for all help from all of you!
/Lars