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Old 06-18-2011, 11:50 AM
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help pulled 2 codes

I did an egr delete and now have p0403 and p0405 both poped twice and keep poing even after clearing them, now I know you usually do get a code without the egr but whats the second one about
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Old 06-18-2011, 12:40 PM
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both are egr codes .
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Old 06-18-2011, 12:44 PM
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P0403 C* O R Exhaust Gas Recirculation Control Circuit EGR actuator circuit check. Diagnostic circuit associated
with 1 Amp driver Internal to PCM.
Open circuit, short to ground, and short to power.

P0405 C* O R Exhaust Gas Recirculation Sensor A Circuit Low EGR is disabled when EGR voltage is less than 0.30 volts. EGRP circuit short to ground or open, defective sensor.
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Old 06-18-2011, 12:56 PM
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Ok are these normal for an egr delete, 2004 6.0, I did not reinstall the egr valve, I can put it back in with the delete that I have, or is their another problem some where
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Old 06-18-2011, 01:08 PM
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i have a SCT tuner and with that you can get the codes go away for good.

i'm not sure does it have an effect on power or engine mangment in general if CEL isn't on.
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Old 06-18-2011, 01:10 PM
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i belive it's normal.

i know that -03 like mine does throw those codes,but not turn the CEL on
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Old 06-18-2011, 01:11 PM
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do you think it would go away if i put my egr valve back in
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Old 06-18-2011, 01:25 PM
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i belive that those two codes would go away, but you could have some other codes from EGR cause of when PCM command the valve to open and nothing realy changes it could throw some egr code.

not sure tough.

but i know that other european smaller turbo diesel engines have a loss off power cause the engine managment system command the egr open and asume that it is open and the air flow through the maf isn't the only place where the engine gets the air and the ecu does change the fuel injection timing... and so on...
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Old 06-18-2011, 04:29 PM
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so to do it the right way i should get an sct
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Old 06-19-2011, 08:40 AM
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Plug the EGR in and tie wrap it to something in the engine until you get a tuner. Not sure about the '04 but on later MY's it has been confirmed the cooling fan will not work properly if the EGR is disconnected.
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