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#1
07-01-2005, 11:22 PM
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PO401 EGR Failure
 I have a 96 T&C with 3.8 and have a OBDII code of PO401. I know that it can be one of the following: The DPF (differential pressure) sensor is faulty and needs to be replaced There is a blockage in the EGR (most likely carbon buildup) The EGR valve is faulty The EGR valve may not be opening due to a lack of vaccuum What is the most common? Any suggestions? Where is the DPF Sensor? The EGR Valve? Thanks 
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