P1211 code with constant service engine light
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Senior User
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From: San Diego
P1211 code with constant service engine light
I was on the way back from the weekend trip and got a service engine soon light. I didn't notice any lack of power, rough idle or hard starting cold or hot. So we pushed on home. I checked the codes and it is the P1211. Doing some research it seems the ICP is not as expected so I hooked up my phone with the Torque app and the IPR and ICP seem to be close to normal at idle and running. I din't see any high IPR %. At idle the IPR was around 15.5 cold and 10.1 after a short run to the store and back when it warmed up a bit. ICP was around 690-720 cold and 470-490 when i got back.
Does that seem like normal readings?
I cleared the codes and the CEL comes back on right away after starting the truck.
I do have a TS performance chip that I will take out and see if that could be causing any problems.
What else should I be looking into?
Thanks in advance for any and all help on this.
Does that seem like normal readings?
I cleared the codes and the CEL comes back on right away after starting the truck.
I do have a TS performance chip that I will take out and see if that could be causing any problems.
What else should I be looking into?
Thanks in advance for any and all help on this.
More Turbo
Joined: May 2016
Posts: 717
Likes: 9
Here is a posting I found...
P1211 - "ICP Higher / Lower than Desired" (7.3):
1. We all know that this code is commonly caused by "Hot Chips" that are demanding more Injection Control Pressure (ICP) than the High Pressure Oil Pump can deliver. For what it's worth, these are the exact parameters that trigger this code:
PRIOR TO BEGINNING THE TROUBLESHOOTING PROCESS RETURN YOU’RE PROGRAMMING TO STOCK AND/OR REMOVE OR DISABLE ANY CHIP.
ICP 410psi Higher than Desired for 7 Seconds
ICP 280psi Lower than Desired for 7 Seconds
2. This code can also be caused by LEGITIMATE HIGH PRESSURE OIL SYSTEM ISSUES. Below is a list of some of the causes:
a. Failed or Sticking IPR (Injection Pressure Regulator)
b. Failed or Weak HPOP (High Pressure Oil Pump) Any Leak in High
Pressure Oil System (O-ring, stuck injector, etc.) Low Fuel Pressure (Rare) P1280 / P1281 / P1283 - (7.3L)
c. These codes are all "electrical" in nature. Common causes are shorts between the Red and White IPR wires or between the Red IPR wire and ground. These can also sometimes indicate a PCM
P1211 - "ICP Higher / Lower than Desired" (7.3):
1. We all know that this code is commonly caused by "Hot Chips" that are demanding more Injection Control Pressure (ICP) than the High Pressure Oil Pump can deliver. For what it's worth, these are the exact parameters that trigger this code:
PRIOR TO BEGINNING THE TROUBLESHOOTING PROCESS RETURN YOU’RE PROGRAMMING TO STOCK AND/OR REMOVE OR DISABLE ANY CHIP.
ICP 410psi Higher than Desired for 7 Seconds
ICP 280psi Lower than Desired for 7 Seconds
2. This code can also be caused by LEGITIMATE HIGH PRESSURE OIL SYSTEM ISSUES. Below is a list of some of the causes:
a. Failed or Sticking IPR (Injection Pressure Regulator)
b. Failed or Weak HPOP (High Pressure Oil Pump) Any Leak in High
Pressure Oil System (O-ring, stuck injector, etc.) Low Fuel Pressure (Rare) P1280 / P1281 / P1283 - (7.3L)
c. These codes are all "electrical" in nature. Common causes are shorts between the Red and White IPR wires or between the Red IPR wire and ground. These can also sometimes indicate a PCM
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
P1211 is synonymous with a hot tune. Most tuners disable the P1211 light just to get away with pulling that little trick, but people with scan gauges are onto them.
You won't see a P1211 at idle - it will rear it's ugly little head after an aggressive merge onto the freeway, or a fun frolic with permagrin.
You won't see a P1211 at idle - it will rear it's ugly little head after an aggressive merge onto the freeway, or a fun frolic with permagrin.
Thread Starter
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Senior User
Joined: Feb 2008
Posts: 264
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From: San Diego
Here is a posting I found...
P1211 - "ICP Higher / Lower than Desired" (7.3):
1. We all know that this code is commonly caused by "Hot Chips" that are demanding more Injection Control Pressure (ICP) than the High Pressure Oil Pump can deliver. For what it's worth, these are the exact parameters that trigger this code:
PRIOR TO BEGINNING THE TROUBLESHOOTING PROCESS RETURN YOU’RE PROGRAMMING TO STOCK AND/OR REMOVE OR DISABLE ANY CHIP.
ICP 410psi Higher than Desired for 7 Seconds
ICP 280psi Lower than Desired for 7 Seconds
2. This code can also be caused by LEGITIMATE HIGH PRESSURE OIL SYSTEM ISSUES. Below is a list of some of the causes:
a. Failed or Sticking IPR (Injection Pressure Regulator)
b. Failed or Weak HPOP (High Pressure Oil Pump) Any Leak in High
Pressure Oil System (O-ring, stuck injector, etc.) Low Fuel Pressure (Rare) P1280 / P1281 / P1283 - (7.3L)
c. These codes are all "electrical" in nature. Common causes are shorts between the Red and White IPR wires or between the Red IPR wire and ground. These can also sometimes indicate a PCM
P1211 - "ICP Higher / Lower than Desired" (7.3):
1. We all know that this code is commonly caused by "Hot Chips" that are demanding more Injection Control Pressure (ICP) than the High Pressure Oil Pump can deliver. For what it's worth, these are the exact parameters that trigger this code:
PRIOR TO BEGINNING THE TROUBLESHOOTING PROCESS RETURN YOU’RE PROGRAMMING TO STOCK AND/OR REMOVE OR DISABLE ANY CHIP.
ICP 410psi Higher than Desired for 7 Seconds
ICP 280psi Lower than Desired for 7 Seconds
2. This code can also be caused by LEGITIMATE HIGH PRESSURE OIL SYSTEM ISSUES. Below is a list of some of the causes:
a. Failed or Sticking IPR (Injection Pressure Regulator)
b. Failed or Weak HPOP (High Pressure Oil Pump) Any Leak in High
Pressure Oil System (O-ring, stuck injector, etc.) Low Fuel Pressure (Rare) P1280 / P1281 / P1283 - (7.3L)
c. These codes are all "electrical" in nature. Common causes are shorts between the Red and White IPR wires or between the Red IPR wire and ground. These can also sometimes indicate a PCM
P1211 is synonymous with a hot tune. Most tuners disable the P1211 light just to get away with pulling that little trick, but people with scan gauges are onto them.
You won't see a P1211 at idle - it will rear it's ugly little head after an aggressive merge onto the freeway, or a fun frolic with permagrin.
You won't see a P1211 at idle - it will rear it's ugly little head after an aggressive merge onto the freeway, or a fun frolic with permagrin.
Thread Starter
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Senior User
Joined: Feb 2008
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From: San Diego
Tugly, do those numbers seem normal to you? I'm not the most informed on the numbers I should be seeing.
Well it looks like it is the chip is causing the code. I checked the IPR and ICP wiring for shorts and everything checked out so I removed the chip. The CEL never came back on and no codes when scanned.
I don't know if I should put the chip back in and see if just a reseat would clear it or just send the chip back for warranty? Would it be a good idea to reinstall the chip to verify? Is that a common thing with the TSPerformance chips?
Thanks again for the help everyone
Well it looks like it is the chip is causing the code. I checked the IPR and ICP wiring for shorts and everything checked out so I removed the chip. The CEL never came back on and no codes when scanned.
I don't know if I should put the chip back in and see if just a reseat would clear it or just send the chip back for warranty? Would it be a good idea to reinstall the chip to verify? Is that a common thing with the TSPerformance chips?
Thanks again for the help everyone
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
The numbers you read off in your post are factory spec - so whatever was throwing the code, we'd need to see a log of a number of PIDs to know precisely where things went wrong.
Who did you get your tunes from? The chip is just hardware, like a phone... but the tuning on the chip is what makes a difference. Since you mentioned "warranty", I'm guessing the chip is a recent item - and that raises the question if the edge connector on the PCM was properly cleaned, or maybe tinned.
Who did you get your tunes from? The chip is just hardware, like a phone... but the tuning on the chip is what makes a difference. Since you mentioned "warranty", I'm guessing the chip is a recent item - and that raises the question if the edge connector on the PCM was properly cleaned, or maybe tinned.
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Thread Starter
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Senior User
Joined: Feb 2008
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From: San Diego
The numbers you read off in your post are factory spec - so whatever was throwing the code, we'd need to see a log of a number of PIDs to know precisely where things went wrong.
Who did you get your tunes from? The chip is just hardware, like a phone... but the tuning on the chip is what makes a difference. Since you mentioned "warranty", I'm guessing the chip is a recent item - and that raises the question if the edge connector on the PCM was properly cleaned, or maybe tinned.
Who did you get your tunes from? The chip is just hardware, like a phone... but the tuning on the chip is what makes a difference. Since you mentioned "warranty", I'm guessing the chip is a recent item - and that raises the question if the edge connector on the PCM was properly cleaned, or maybe tinned.
I am thinking of putting the chip back in to see if the re seat would clear it up. I will check the edge connector but the chip has been on the truck for about 4 months and this is the first problem. Granted I don't drive the truck everyday and not sure of milage since installed. The tunes are from TS Performance the ones that come with the chip
.
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Senior User
Joined: Feb 2008
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From: San Diego
Well I got it figured out for now. I did some research and it looks like I didn't clean the edge pins/connection on the ECM. There was still silver on the pins so I cleaned them to all copper color and put the chip back in and no constant CEL. I guess chock it up to rookie mistake. But the weird thing is it was working fine for 4 months and all of a sudden it had problems. Well I hope that it is all good for now.
Thanks again everyone for the help.
FTE-Spread The Knowledge
Joined: Feb 2008
Posts: 2,288
Likes: 244
Same thing here. Mine is every once in a while though.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
P1211 is common with a chip because many tuners make the same mistake in the tunes - I've seen enough logs from enough trucks with enough tunes to make that declaration with absolute certainty.
I don't get a P1211. I never have since I changed tunes - and I have the same hardware I had when the other tuner gave me P1211s. I log with something like 4 different OBDII apps, and there is no cause for a P1211 - so it's not just a tweak of a tune to mask a P1211.
I don't get a P1211. I never have since I changed tunes - and I have the same hardware I had when the other tuner gave me P1211s. I log with something like 4 different OBDII apps, and there is no cause for a P1211 - so it's not just a tweak of a tune to mask a P1211.
Thread Starter
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Senior User
Joined: Feb 2008
Posts: 264
Likes: 0
From: San Diego
P1211 is common with a chip because many tuners make the same mistake in the tunes - I've seen enough logs from enough trucks with enough tunes to make that declaration with absolute certainty.
I don't get a P1211. I never have since I changed tunes - and I have the same hardware I had when the other tuner gave me P1211s. I log with something like 4 different OBDII apps, and there is no cause for a P1211 - so it's not just a tweak of a tune to mask a P1211.
I don't get a P1211. I never have since I changed tunes - and I have the same hardware I had when the other tuner gave me P1211s. I log with something like 4 different OBDII apps, and there is no cause for a P1211 - so it's not just a tweak of a tune to mask a P1211.