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O2 sensor+ NOX sensor codes 850

posted by  someone claiming to be NJA on  Fri Apr 2 15:43 CST 2004 [RELATED]

I had the check engine light come on and took it to my indy for codes. He said O2 sensor came up (reasonable for a '94 855T w/ 92k), plus a NOX sensor code. I didn't even know these beasts had a NOX sensor...and, besides that, do you think if I replaced the O2 sensor, the NOX code would go away? There was also a "running rich" code, but I figure that'll get taken care of my a new O2 sensor.
The car is parked 'til I get all this straightened out so I don't need to buy a new CAT b/c of the running rich conditions screwing up the CAT.

Ideas/advice?

Thanks as always,

-Nick






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