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Is the trans shifting at all or is it starting and staying in 3rd?
Your P040D that was there indicates the EGRT sensor in the up pipe is failing or is intermittent and should be replaced.
As for your P1335, is your EGR system intact, deleted, what?
If it is deleted make sure you have the proper tunes that turn all that junk off and the PCM is not still looking for the components. If your EGR junk is there and not plugged in, I would try at least plugging the valve in and seeing if the code goes away.
If you loaded the 210 tune, I don't think it deletes the electronic control portion of the EGR unless you have the tune specifically set up to do so.
If memory serves me rightly, certain EGR codes will make the truck do all kinds of goofy ****.
Put the 310 tune back in it and see if the EGR code goes away. I think over 275 the stuff is electronically disabled not just turned off in the PCM.
Hope this helps.
Ford Senior Diesel Technician
2008 F-350 4x4 Off Road 6.4 Powerstroke Diesel
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