Icp Code P 1211 Keeps Going Off
Thread Starter
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Senior User
Joined: Dec 2007
Posts: 383
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From: PLANT CITY, FL
Icp Code P 1211 Keeps Going Off
Hi guys I keep throwing this code does anyone have any idea why that would happen or how to fix it also what is the ICP sensor and what is its purpose. It only happens when I really get on it.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Injection Control Pressure (ICP) Sensor
Signal Functions
The injection control pressure (ICP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the powertrain control module (PCM), produces a linear analog voltage signal that indicates pressure.
The ICP sensor's primary function is to provide a feedback signal to indicate rail pressure so that the PCM can command the correct injector timing and pulse width and the correct injection control pressure for proper fuel delivery at all speed and load conditions.
Detection/Management
If the PCM detects a malfunctioning ICP sensor (sensor out of range high or low), the CHECK ENGINE light is illuminated and the PCM will go to open loop control of injection control pressure. (Operate from an estimated injection control pressure.)
Your getting the code because your truck is chipped. Your HPOP isn't getting enough fuel through the injectors to meet what's being called for at WOT with the enhanced programming of the PCM.
Signal Functions
The injection control pressure (ICP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the powertrain control module (PCM), produces a linear analog voltage signal that indicates pressure.
The ICP sensor's primary function is to provide a feedback signal to indicate rail pressure so that the PCM can command the correct injector timing and pulse width and the correct injection control pressure for proper fuel delivery at all speed and load conditions.
Detection/Management
If the PCM detects a malfunctioning ICP sensor (sensor out of range high or low), the CHECK ENGINE light is illuminated and the PCM will go to open loop control of injection control pressure. (Operate from an estimated injection control pressure.)
Your getting the code because your truck is chipped. Your HPOP isn't getting enough fuel through the injectors to meet what's being called for at WOT with the enhanced programming of the PCM.
Thread Starter
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Senior User
Joined: Dec 2007
Posts: 383
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From: PLANT CITY, FL
That is wgat I thought so i would need a HPOP or get rid of the chip to get rid of this code correct? Do alot of trucks that are chipped get this same code all of the time? Also I can push 27-28 lbs of boost and it doesnt throw any codes so there is no point in the ITP Overboost Annihilator correct?
Thanks
Thanks
Elder User
Joined: May 2008
Posts: 860
Likes: 2
From: Liberty Lake, WA
The code is really nothing to worry about. Its common in modded trucks and the only real cure is either dual HPOP's or one of the new single HPOP's that are capable of supplying the required pressure.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
That is wgat I thought so i would need a HPOP or get rid of the chip to get rid of this code correct?
Do alot of trucks that are chipped get this same code all of the time?
Also I can push 27-28 lbs of boost and it doesnt throw any codes so there is no point in the ITP Overboost Annihilator correct?
Thanks
Do alot of trucks that are chipped get this same code all of the time?
Also I can push 27-28 lbs of boost and it doesnt throw any codes so there is no point in the ITP Overboost Annihilator correct?
Thanks
Yes they do.
Besides throwing codes, it backs off the fuel so yes, you need the Overboost Annihilator.
