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Error code 401 - Galant Mitsubishi Cars & Trucks

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The code 401 is for the EGR system meaning that the passages inside the INTAKE MANIFOLD are plugged up with carbon or the EGR valve is faulty, Idle the car, use a vacuum pump to open the EGR valve if the engine does not stumble and nearly 'DIE" then the EGR passages are plugged up or the EGR valve wont hold vacuum Do not just assume the EGR valve is bad before you test first and if it is ONLY ONLY ONLY buy it at the dealer even if aftermarket ones are free!!!!!!!!!!!!!!!
Please rate this a fixya if you feel the advice is helpful Thanks Randy.

Posted on Sep 15, 2008

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