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Question: Codes are 1189 and 1188, will not pass inspection, what are these codes?

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vtmw, Eden, NC, August 07, 2012, 10:04
 Rookie

The codes my car is pulling are 1189 and 1188. Was told by two mechanics that I need a cat converter, the one yesterday said nothing is wrong with it. Has new air mass flow, fuel filter, O2 sensors but still not passing inspection. Any help appreciated

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  • Answer #1

    Chevy Power August 08, 2012, 12:46
     Journeyman

    The codes refer to fuel trim limits. The computer is trying to enrich and lean out the fuel system to compensate for something. It could be about a dozen different things. The car will need to be properly diagnosed by a knowledgeable technician.

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