2006 6.0 EGR/EPC/ICP Codes. - Ford Powerstroke Diesel Forum
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Old 04-11-2013, 02:27 PM
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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.
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Old 04-11-2013, 02:51 PM
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Quote:
Originally Posted by JKing320 View Post
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.
All those sensors share the Vref(5v) pin 36 on the engine conector if you lost that all the sensors will show low. I would verify VRef at any of those sensors if it is <5v that is your issue. Easiest to check is EGR 2 pin from right with clip on top. If you have low voltage there but normal at pin 36 at the PCM then it is the wire. You could also just wiggle the PCM connector as they sometimes are a little loose.

Hope that helps.
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Old 04-11-2013, 03:17 PM
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Thanks I'll be sure and check that when I get home today. Wouldn't have known to do that at all.
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