03' Duramax white smoke and codes P0101, P0401 - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 03-08-2009, 12:06 AM Thread Starter
 
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03' Duramax white smoke and codes P0101, P0401

i have a 2003 2500HD 6.6L. first thing in the morning when i start it i have no porplems, but once the engine warms it starts to smoke white only at idle. like i said i have a P0101 code and a P0401 code. i know what the codes mean. i dont know if the MAF senor is causing the smoke or not. the only thing i have done so far is to put fuel injector cleaner thru two tanks of fuel so far and no luck. i hear it could be the fuel injector pressure regulater but i have no clue how to tell or know where on the truck it is. the truck has 83000 miles on it.
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post #2 of 4 (permalink) Old 03-08-2009, 12:08 AM Thread Starter
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i also dont feel any loss in power, and the idle is rough. any info would help.
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post #3 of 4 (permalink) Old 03-08-2009, 08:23 PM
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You didnt put GASOLINE engine fuel injector cleaner thru it did you? I hope not.

Do you have an aftermarket intake? Any other mods? Is this a Cali truck? That P0401 is an EGR code...it strikes me that you may have an issue in that system.
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post #4 of 4 (permalink) Old 03-08-2009, 11:48 PM Thread Starter
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no i made sure it was diesel injector cleaner. just looks like maybe an 4 inch exhaust from the headers.
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