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Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

emissions failure

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Old 07-01-2009, 08:19 AM
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Question emissions failure
OK here we go. My 850 turbo, 1995 failed twice. High hydro carbons and CO.
I changed the oil & filter, and the plugs, which were pretty shot. Hooked up the code reader
and got P0130 and P0135. Is that O2 sensor?
 
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Old 07-02-2009, 01:09 AM
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Yes;

P0130 is Front HO2S Signal error

and

P0135 is Front HO2S Preheating circuit error

which would tell me that your front O2 sensor is either completely failed or unplugged.
 
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Old 07-02-2009, 06:53 AM
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Thanks! Somewhat easy fix. Hopefully that cures the problem.
 
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Old 07-02-2009, 01:16 PM
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it should....

Also run the car a little while right before you get it tested...A warm cat works better then a cool cat.
 
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