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O2 sensor+ NOX sensor codes 850 1996

I had a similar issue (code 435 = 02 sensor). What is CAT you mention? My mechanic said vaccum leaks and intake and breather hoses need replacing + 02 sensor w/ labor = $950. That sounds like a lot but if there is danger of messing up CAT(?) should I do it?
Car seems to run OK . . .






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New O2 sensor+ NOX sensor codes [850]
posted by  someone claiming to be NJA  on Fri Apr 2 15:43 CST 2004 >


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