Question about 2003 Mitsubishi Diamante

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P 0421 code when took emissions test - 2003 Mitsubishi Diamante

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Either your O2 Sensor has failed, your catalytic converter has failed, or one of your spark plugs is fouled up

Posted on Sep 28, 2009

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Posted on Jan 02, 2017

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I DONT KNOW WHERE MY EVAP PURGE SYSTEM IS LOCATED AT ON MY 2004 DODGE INTREPID I NEVER SEEN ONE B4, BUT I TOOK THE EMISSIONS TEST AND A CODE CAME BACK PO441 IT CAUSED ME TO FAIL THE TEST I NEED TO GET THIS...


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Took my 1997 Dodge Ram to get emissions test, code PO740 came up. What does this mean?


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I have a 1998 BMW 323, it having a check engine light on and when i took it to the mechanic they said its code 446 " evap emission control system"


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Computer not recognized while trying to get emissions testing


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