I posted this under another heading, but thought I would put this info under exhaust. My exhaust was broken at the weld on the catalytic converter on the driver's side. It gave code P2098.
I put a new exhaust in and it is doing well, however, now that I know the cause and have been able to research it much better, I find that I could have saved a lot of money by ordering from here:2005 Chrysler Crossfire Eastern Catalytic Converter - Direct Fit 49-State Eastern Catalytic Converters

good luck to anyone that has this problem