04 code po488
Fleet Owner
Joined: Nov 2003
Posts: 27,872
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P0488 is for the EGR throttle position control range/performance.
The EGR throttle position is different from the commanded position for a period of time.
I am not too familiar w/ how this throttle plate should work - but I am sure others are.
Do you still have your EGR valve (and is it connected)? If so, maybe worth a good cleaning. Also, inspect this throttle plate for smooth operation.
The EGR throttle position is different from the commanded position for a period of time.
I am not too familiar w/ how this throttle plate should work - but I am sure others are.
Do you still have your EGR valve (and is it connected)? If so, maybe worth a good cleaning. Also, inspect this throttle plate for smooth operation.
Senior User
Joined: May 2009
Posts: 311
Likes: 1
From: Clearwater
P0488 is a code for the egr throttle plate, usually means it is sticking. Try pulling the turbo connection off and look down the intake to see if the butterfly throttle is sticking. When you turn the key on, the throttle is supposed to cycle close then open and stay open. If not, I would try replacing the throttle plate assembly.
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Freshman User
Joined: Oct 2007
Posts: 27
Likes: 0
It has a new EGR valve and it has been deleted at the exhaust pipe and at the cooler. I took the plate off and put it back on and still has the code. My SCT scanner from spartan is some how able to deleat that code but I can't seem to get the help from Spartan for some reason. Thanks
Senior User
Joined: May 2009
Posts: 311
Likes: 1
From: Clearwater
You took what plate off? The problem may be in the programming. Later model trucks did not have an egr throttle plate, they used a scoop in the exhaust to collect the exhaust gas. Perhaps its throwing a false code.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
It is a false code. I removed my throttle plate because it was never used in the strategy from almost day one plus it was a restriction in the airflow. I now have just an elbow and the sensor wire is taped up in the engine compartment. I have ID tunes and the only time the code shows up is if another code of some kind is present. It means nothing, especially if you have an EGR delete. FWIW--Spartan can no longer tune SCT. If you want SCT tunes call Eric at Innovative.
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Freshman User
Joined: Oct 2007
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It is a false code. I removed my throttle plate because it was never used in the strategy from almost day one plus it was a restriction in the airflow. I now have just an elbow and the sensor wire is taped up in the engine compartment. I have ID tunes and the only time the code shows up is if another code of some kind is present. It means nothing, especially if you have an EGR delete. FWIW--Spartan can no longer tune SCT. If you want SCT tunes call Eric at Innovative.
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Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
You have an 04 with a CEL from a P0488 code??? If that's the only thing you're scanning for codes with then you need to try another scanner. I've never had a CEL on my 04 for a P0488--in fact I have that code set now. SCT is virtually worthless for code scanning. Try an autozone or advance autoparts, or better yet a Ford dealer.
Yes, it's very easy to get tunes from Eric. Since you already know your strategy, go to the innovative diesel website and shoot him an email or an order. You'll probably have them by tonight.
Yes, it's very easy to get tunes from Eric. Since you already know your strategy, go to the innovative diesel website and shoot him an email or an order. You'll probably have them by tonight.
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Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
I'll refrain from my usual plug about what scan reader to get at this time, but I can give it if the OP wants it.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
I wonder if it's a local thing for y'all. I was just in Autozone last week and they were still pulling codes then. Unless they made a switch this week.
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Freshman User
Joined: Oct 2007
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You have an 04 with a CEL from a P0488 code??? If that's the only thing you're scanning for codes with then you need to try another scanner. I've never had a CEL on my 04 for a P0488--in fact I have that code set now. SCT is virtually worthless for code scanning. Try an autozone or advance autoparts, or better yet a Ford dealer.
Yes, it's very easy to get tunes from Eric. Since you already know your strategy, go to the innovative diesel website and shoot him an email or an order. You'll probably have them by tonight.
Yes, it's very easy to get tunes from Eric. Since you already know your strategy, go to the innovative diesel website and shoot him an email or an order. You'll probably have them by tonight.
I did use a auto zone scanner. I worked for other codes but that 488 code comes right back at me. My SCT scanner won't read codes but will delete them or it did last time.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
Interesting. I would be very tempted to get it on IDS to see what else is going on. I don't think a P0488 should set a CEL. At least it doesn't on my truck. Does it turn the light off when you clear the code?
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Freshman User
Joined: Oct 2007
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The code will go away then one or two minutes later it comes right back. This code is like herpes. NOT GOOD LOL Thanks for all your in put
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