I got this car back in January she runs a little rough during idle and in park so I took a scan tool to it and it came up with PO401 I looked up the code and it said egr problem I tested the egr it was stuck open so I replaced it then I erased the code and a month later it came back same code so I looked at the hoses and tubes they all seemed fine I decided after that to look at all data and Mitchell and go to find out this vehicle comes with a dpfe now my problem is I can't find it I've looked on the firewall and the engine but I saw no resemblance of what I was looking for I could use a bit of help
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It's right beside the EGR valve .. Is that what you needed?