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| 6.4L Performance Parts Discussion What has or has not worked for you? |
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LinkBack | Thread Tools | Display Modes |
09-24-2009, 06:21 PM
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P0401 is this bad?
 I keep getting this code and clearing it.....is this bad? I'm running the 275v4 maybe once a day,I don't want to take all the goodies off to take it in or should I ?Thanks. 
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09-24-2009, 06:36 PM
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That is an EGR valve issue. Monitor your EGR valve percentage under Generic OBDII parameters. Its most likely stuck closed since you are able to drive the truck.
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Linear Mode
