p1280 code
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p1280 code
I have read several threads in this and other forums concerning the p1280 error code. It seems that most people are pointing at the ICP. Some have said that if there is oil in the connection, the ICP is bad or going out and if you disconnect the ICP the engine will run properly. I have disconnected the ICP and my engine still wont't run. It "fires" but it immediately dies. Another thread said to check the oil level in the HPOP reservior. I haven't checked the oil yet but I don't understand how the reservoir could be low on oil if the engine isn't.
Any ideas why my engine won't run with the ICP disconnected?
Any ideas why my engine won't run with the ICP disconnected?
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p1280 code
I'm sorry. I was driving the truck, came to a stop sign. When I went to start off, the truck sounded like crap and died. I haven't been able to get it restarted since. I had it towed home. It fires but will not run.
Thanks for responding. Sure hope you can help me.
Thanks for responding. Sure hope you can help me.
Post Fiend
Joined: Sep 2003
Posts: 6,096
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From: Mesa AZ
Check and see if you have any fuel in the bowl (filter/water separator)
Something to check...(I hope it's that simple...)
FYI...if all other systems are good, then the engine should still start and run with the ICP disconnected. It will throw a SES light but should start and run fine.
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p1280 code
You're right, I wish it was that simple. I have over a half tank of fuel. The bowl is full. and it won't run with the ICP unplugged. I also checked the oil level in the truck and it was in the operate area on the dip stick. I then checked the oil level in the HPOP oil reservoir and it was within an inch from the top of the reservoir. I then cleaned the ICP connector with contact cleaner thinking that since there was oil in the terminals, they could be shorted. That didn't work either.
Tomorrow I'm going to pull the IPR and see if ti is tuck. Hope that solves my problem.
Thanks for your input. I can't believe that only 2 people have experienced a P1280 code and solved it.
Tomorrow I'm going to pull the IPR and see if ti is tuck. Hope that solves my problem.
Thanks for your input. I can't believe that only 2 people have experienced a P1280 code and solved it.
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
You're right, I wish it was that simple. I have over a half tank of fuel. The bowl is full. and it won't run with the ICP unplugged. I also checked the oil level in the truck and it was in the operate area on the dip stick. I then checked the oil level in the HPOP oil reservoir and it was within an inch from the top of the reservoir. I then cleaned the ICP connector with contact cleaner thinking that since there was oil in the terminals, they could be shorted. That didn't work either.
Tomorrow I'm going to pull the IPR and see if ti is tuck. Hope that solves my problem.
Thanks for your input. I can't believe that only 2 people have experienced a P1280 code and solved it.
Tomorrow I'm going to pull the IPR and see if ti is tuck. Hope that solves my problem.
Thanks for your input. I can't believe that only 2 people have experienced a P1280 code and solved it.
What scan tool are you using? Do you see engine rpm while cranking?
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Lead Driver
Joined: Sep 2005
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From: Norco,CA
Well another thought, what did you pull the codes with. Not all code readers are equal.
Theres alot of things electrical on these engines that will make it not run. First thing that comes to mind is the fuel heater in the bowl and I believe #30 fuse. CPS also amoung other things. Hopefully not a bad IDM, is it wet? I really hope you get it fixed and as you go down the list keep us posted that we mit help.
Theres alot of things electrical on these engines that will make it not run. First thing that comes to mind is the fuel heater in the bowl and I believe #30 fuse. CPS also amoung other things. Hopefully not a bad IDM, is it wet? I really hope you get it fixed and as you go down the list keep us posted that we mit help.
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p1280 code
Thanks for the additional things to check. I don't know the name of the scanner that was used to pull the codes. It belongs to the dealership thst my son works for. One of their mechanics used it on my truck. It actually pulled 6 codes with the p1280 coming up as a pending code. The mechanic said it came up as a pending code because it is a code that the PCM must see at least twice for it to be looged and since the truck died and I haven't been able to get it started again, he believes that that is when the first p1280 code was seen. The other major code that it pulled was a p1316 which is an IDM code.
I'll try cleaning the IPR and check all the fuses in the morning and let you know if I get it running.
I'll try cleaning the IPR and check all the fuses in the morning and let you know if I get it running.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
P1280 often refers to a wiring issue with the ICP. If you have chaffed or shorted wires, or unplug the ICP, that is the code that trips.
Checking the IPR sounds like a good idea, but knowing the rest of those codes would be helpful. The P1316 is a much more important code to be chasing than the P1280. While the scanner was there and he pulled that code, did he buzz test the injectors?
Give us any more details you can remember, even if they don't seem important so we can try to help. Odds are fixing your P1280 code won't get the truck running.
Checking the IPR sounds like a good idea, but knowing the rest of those codes would be helpful. The P1316 is a much more important code to be chasing than the P1280. While the scanner was there and he pulled that code, did he buzz test the injectors?
Give us any more details you can remember, even if they don't seem important so we can try to help. Odds are fixing your P1280 code won't get the truck running.
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p1280 code
He did test the injectors with the scanner and they all operated with no problem. I'm going to go pull the IPR now. The other codes that came up are as follows p0276
p0344
p0603
p0703
p1000
p0344
p0603
p0703
p1000
Post Fiend
Joined: Mar 2007
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From: Texas
Depending on what year your truck is, the tach bouncing while cranking can indicate a good signal from the CPS. Using a scanner to monitor RPM's while cranking will also indicate a good CPS. Some year trucks the tach won't move until the engine starts.
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He did clear the codes. I also replaced the CPS prior to him putting the scanner on because I had had this problem before and was sure thst would solve it. It didn't. The p1280 stayed as a pending code.
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