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P0402 code after EGR Cooler Replaced
I have a 06 F-350 I had to replace the EGR Cooler. After the cooler was replaced I had a CELL come on and the code reader is getting the P0402 code. It says EGR FLow Excessive I have read on here that it could be my EGR valve I had just replaced the EGR 2 weeks before the cooler. Could the coolant flowing through killed my EGR? I ran the truck some after the I began to get the white smoke or steam from the coolant burning so I didnt know if that would have killed it or not. What else could it be? I read something about some other kind of sensor that could be bad but dont know how to check it or where it even is on the truck. I am reading any freeze codes showing the truck is running in any limp mode from the Cell. The truck is running fine just the light is annoying to have on all the time. Any help would be great. Thanks
Guess I should have said the only mods I have done is a Airaid air intake kit. Everything else is factory.
Last edited by darrell8; 02-08-2010 at 09:05 PM.