Question about 2004 Lincoln Town Car

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I am getting a code p0430 on my lincoln town car 2004 and i just had it inspected and they passed it and said nothing was wrong with it. Now i am getting that code could u tell me if its a computer problem, that is what the mechanic said but i was also told it was a code to replace the catalytic converter

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  • mikeas22 May 14, 2009

    Thank you very much for the help, for someone like me who does not know cars it was very helpful.



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First, disconnect the battery cable for about 10 minutes. This will clear the computer. Any codes set will be new. Check to see if all vacuum lines were connected by the tech. This code indicates EGR flow is not sufficient. Many people replace the DPFE which is a small part with 2 vacuum lines and one electric connector at the back of the motor.
However, it is just as important to clean the carbon buildup in the airhorn below a part called the throttle valve. You see the DPFE can be accurate in setting a low flow Code, but it doesn't know the difference between carbon buildup and bad parts.

Posted on May 13, 2009


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