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2006 6.0 EGR/EPC/ICP Codes.
I'm not necessarily new to this forum, but also clearly haven't posted. Usually I can find what I'm looking for and problem solve on my own. I'm a member of another forum and I know it can get frustrating having the same questions asked over and over. I've searched and searched and done everything I can within my capabilities. Would just like some input before I drop money on parts.
Codes as read by my Edge module (Just plugged in to pull codes):
P0405 - EGR Control Circuit Sensor A Circuit Low
P0472 - Exhaust Back Pressure Sensor Circuit Low Input
P2285 - Injector Control Pressure Sensor Circuit Low
After searching for remedies I have removed the ICP Sensor and checked for oil, as well as tracing the wires for nicks and or oil buildup. Clean as can be. I also removed the ECP Sensor and tube and thoroughly cleaned them. I read where sometimes the EGR valve causes P0405 so I swapped out one we had on another 6.0. That didn't solve the code so I also swapped pin A out as well. Still nothing. Truck acts like I have injectors out until it warms up. Still definitely feels way less powerful than our other 6.0. My truck went in a little over a year and a half ago and had a new EGR cooler and oil cooler put on (was under warranty). All connections look clean and great. If all the parts are out I understand having to purchase new ones, but If I don't have to I would rather not. I believe I read somewhere that I can check the voltage to these sensors? My eyes are hurting from this freaking computer screen so I may have skipped over some crucial things to check. My truck is completely stock performance wise. When I clear my codes, I exit the menu. Upon immediately returning to pull my codes they are all present again. This is all done with the truck running. Any help is greatly appreciated. If it makes a difference when I had my truck done for warranty work I had to buy a used catalytic converter for them to cover it. Thanks again.