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05-10-2012, 05:00 PM

vinny850

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trouble codes

i've got a 96 4x4 with the 351 and i have some codes coming up. it' doesnt have any CATs but the O2 sensors are there and plugged in. i get the EGR code but not really sure about the other ones. Any help would be appriciated

po443 evap emission control purge valve c fault

p0401 egr flow insufficient flow

and a p1409 manfacurer control auxiallary emmision control

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05-11-2012, 09:54 AM

atxval

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Quote:

Originally Posted by vinny850

I've got a 96 4x4 with the 351 and i have some codes coming up. it' doesn't have any CATs but the O2 sensors are there and plugged in. i get the EGR code but not really sure about the other ones. Any help would be appreciated

po443 evap emission control purge valve c fault

p0401 egr flow insufficient flow

and a p1409 manfacurer control auxiallary emmision control

So I'm assuming you have test pipes in the place of your cats with possibly a defouler hooked up or the O2 sensors are up and out of the air flow to trick the computer. Is this an issue that just popped up or is this a new issue that popped up after installing test pipes?

Last edited by atxval; 05-11-2012 at 09:56 AM. Reason: clarity

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