Question about DTC codes - Ford Powerstroke Diesel Forum
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Old 08-12-2012, 01:53 PM
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Question about DTC codes

Last fall my EGR cooler failed so I had it deleted and replaced the oil cooler as well. I bought a CTS a few weeks ago and I have persistent DTC codes P0403, P0404 and P1000. Ive read not to worry about the P1000 and I know the P0403 and 0404 are EGR related so are they there because of the EGR delete?

I had one other code for under boost, P0299, last week but after reading here the likely cause was sticky vanes I started driving the dog pi$$ out of it. After a few LONG DEEP rolls into the trottle, she actually seems a bit more responsive and not so laggy at highway speeds. The most boost I have seen in my WOT runs has been 28 psi and I also monitor the VGT duty cycle and it moves from 15% to 85%, 15% getting into it and usually anywhere from 50% to 85% while at highway speeds. There doesnt seem to be much rhyme or reason to the VGT when cruising . Anyway I cleared the P0299 code and its gone for now. If it comes back Ill guess Ill start thinking about having the turbo cleaned. In the mean time I plan on following so many of ya'lls advice...drive it like I stole it.
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Old 08-13-2012, 07:29 PM
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Sounds good.

Sent from my phone that somebody didn't help me get.
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Old 08-14-2012, 04:18 AM
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You dont have to beat on your truck, just open her up once, twice or anytime you pull next to a cummins a week
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Old 08-14-2012, 07:45 AM
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Your EGR codes will continue until you get a programer like SCT to turn it off. The PCM is seeing readings that make no sense to it.
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