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Old 02-28-2013, 09:12 AM

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injector control pressure too low

I had my heads replaced because they were cracked. I had ARP studs put in. I had the turbo taken apart and cleaned. I had an EGR delete installed. Had EGT and turbo boost guages installed. I also had a SCT tuner added. The truck runs great but in street mode and performance mode I get a warning light and when I look it up on the tuner it says 2290, injector control pressure too low. It does not happen in stock mode or tow mode. Has anyone had this and how do you fix it.
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Old 02-28-2013, 11:37 AM
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If it is from your alarm set on the livewire with a tune, you have wasted my time. I will assume the MIL/CEL Wrench light is coming on and the ICP is 2290psi. What is the IPR doing? Where is your foot pedal (APS)? If the PCM thinks the pressure should be higher due to IPR position and APS, for more than XX time it will trigger the code. Since you don't have an aftermarket ICP fooling tune that you mentioned (BTW, even if it was showing low, it would not trigger a code), you have one of 2 problems, a bad ICP sensor (starting to go) or you really do have a small HPO leak. Unfortunately, soon, both of these will make the engine run like crap and one will stop you in your tracks.

Can your stock tune can you get 3600psi or more for ICP at WOT? If you can only get 2300, you have a problem. First place I would look is the ICP sensor plug. If you have oil on the connector, you will need to replace the sensor and you should replace the plug as well, due to oil preventing good voltage readings. After that, you need to troubleshoot the HPO system.
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