Question about 2003 Chevrolet Impala

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My check eng light is on / how do i jump the diag termanl to get the fall code

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The check engine light comes only when the computer control unit (called the PCM) senses a fault in the electronic controls of the engine and/or the emission system, there are about 200 possible faults that turn the light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen and Autozone parts stores do this testing for free.

Posted on May 28, 2010

  • coke_a_mo878 May 28, 2010

    can i pull a code my self

  • yadayada
    yadayada May 28, 2010

    this is the newer OBD2 system, u can't jumper the plug to get the codes to blink (like older OBD1), , u must have a basic scanner to read codes

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