P0404 code ?
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Cross-Country
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P0404 code ?
My truck just through this code auto Zone said it was a egr code I have heard ppl say these codes could mean turbo any help is greatly appreciated o and the truck is a 07 psd 95k on clock
Fleet Owner
Joined: Nov 2003
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If you have had a calibration update in late 2009 (TSB issued on Nov 20) or more recently, the PCM was updated to eliminate the turbo from throwing a P0404 code falsely. If not, folks are correct ... it could be the EGR or it could be the turbo.
This code is an EGR "FLOW" code.
This code is an EGR "FLOW" code.
Hotshot
Joined: Apr 2010
Posts: 19,071
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From: Saratoga Springs,UT
p0404 egr A control circut range/performance
you can try and clean the egr valve and also clean IAT sensor in intake manafold there both probably gummed up
but you may need a new egr valve
you can try and clean the egr valve and also clean IAT sensor in intake manafold there both probably gummed up
but you may need a new egr valve
I'm hitting easy street
Joined: Nov 2009
Posts: 6,395
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From: Central Oregon
Here is a picture of where the IAT2 sensor is.
Got the picture from here:
Powerstroke 6.0L Technical Intro Manual
Got the picture from here:
Powerstroke 6.0L Technical Intro Manual
Hotshot
Joined: Apr 2010
Posts: 19,071
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From: Saratoga Springs,UT
its the two wire sensor in the driver side front intake manafold IAT sensor
the passenger side has a tube that runs to a MAP sensor right above the hvac box
the passenger side has a tube that runs to a MAP sensor right above the hvac box
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Fleet Owner
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The 6.0L has a variable geometry turbo - variable inlet guide vanes to the turbine. A number of moving parts. It is not a case of being either "good or bad".
Hotshot
Joined: Apr 2010
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From: Saratoga Springs,UT
it takes several cycles of warm up followed by a cold soak coolant temps need to change alot
it needs to get so hot then cool so much before its considered a compleate cycle
not shure of what temps the pcm want to see
and or the problem remains and you need a new egr valve
you said you cleaned the valve and truck runs perfict if it still runs ok give it a few days before you go to dealer
or go back to auto zone and let them turn it off and if it comes back on then you know its time for a new egr valve
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