I can only suggest a search on this site of p0402 code and see what turns up (or alternately DPFE) I looked briefly and found this, perhaps of interest: http://www.asashop.org/autoinc/dec97/egr.htm
98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both
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