service engine light codeP1870

Asked by granger28 Aug 24, 2013 at 02:00 PM about the 1999 Chevrolet S-10

Question type: Maintenance & Repair

The service engine light comes on and off sporadically.  The vehicle failed the emissions test and a code P1870 was given as the reason.  What does that code mean?

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1999 Chevrolet S-10

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