Nov 12, 2018 · the technician may find dtc p0191 set as current or in history. Nov 16, 2024 · no, lml have a regulator on the rail and one on the pump. The one on the rail controls the idle and low rpm/power rail pressure.

Understanding the Context

Pump one kicks in above that. Apr 28, 2015 · i have an employees truck setting a p0191 in a 2011 lml. Upon discovery of code i recommended removing regulator for inspection per pip4949d of si. Feb 13, 2022 · i have a 2012 lml throwing a p0191 code.

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P0191, reduced power Master race, 2019 3500. | Chevy and GMC Duramax
I've got codes p0191 and p0193 on 2011 gmc LML duramax. 6.6L What can I
I've got codes p0191 and p0193 on 2011 gmc LML duramax. 6.6L What can I
I've got codes p0191 and p0193 on 2011 gmc LML duramax. 6.6L What can I
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Key Insights

Truck is deleted, fps on the fuel rail deleted, cp3 swapped, and efi tuned. I have no idea what would be causing the code and. Check fuel rail pressure (frp) sensor voltage in scan data, key on, engine off for 30 seconds. The frp voltage should be 0. 352 to 0.

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Final Thoughts

650 volts. If the voltage is out of range, test. Dec 6, 2013 · p0191 will set if the % that the regulators are on is out of calibrated amount. Jan 31, 2017 · anyone familiar with a p0191 code? (fuel rail pressure sensor circuit). replaced sensor twice.

Two dealers can't figure it out. Truck drives/accelerates/ and starts fine. Jul 15, 2016 · what are your opinions of the screens on these regulators? 2013 lml with 88,000 miles on it.