I get the code P040D every so often. According to all of my research, this is the problem. I have the sensor, and any thing I find about location just talks about how hard it is to replace, but it does not give an exact location.
 
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Ask Your Question2008 Ford F-350 Super Duty
Question: Where is the 2008 FORD F-350 SUPER DUTY EGR Valve Temperature Sensor located?
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