Sep 7, 2021 · I bought a used 2018 2500HD Duramax L5P and a week after owning got a reduced engine power warning and got it scanned and received the P0191 code and took it back to the …

Jan 12, 2025 · The P0191 code is a performance code for the pressure sensor, so the PCM is seeing a pressure it doesn't like. There are other codes that will set if the sensor is shorted to ground or …

Apr 5, 2011 · Just had the same code. It was the rail pressure sensor, had 2 corroded pins from my quad rail gauge being on it. $150 from Jamie at CPP. 2004 Q/C SB 4x4 6 speed, FMW467, Stainless …

Feb 18, 2017 · Driving home from work and look down to see a check engine light. Had code read and it came up P0191. Truck is a 2011 3500, all stock with 53k on it. No noticeable difference in the way it …

Oct 24, 2022 · P0191 Code - 2012 Ram 2500 I’ve been fighting a check engine light for about a year for the following code P0191 (Fuel Rail Pressure Sensor Circuit Range) on my 2012 Ram 2500...

Jan 22, 2018 · P0191 fuel rail pressure I believe. Cleared code. Starts fine, idles perfect. Went out was being mean to it. Spins tires easy and gets to 90 like it's nothing. Stopped at stop sign and took off …

Jul 15, 2024 · I reset the code via the iDash and made it 5 miles. Using the iDash I found the Derringer in a fault code P0191. Fast forward 45 day now. I immediately changed the FRP sensor and the …

Sep 18, 2014 · I know this is an old thread, but I was wondering if you had anymore issues with the P0191 code? ? I've had my 2012 with 129k on the odo for 3 weeks now I've got this code twice so …

Received code, replaced MAF sensor, fuel pressure sensor and fuel pump. After engine warmed up, cannot start. Have to wait twenty minutes before it will start again.

Oct 2, 2018 · Installed lift pump now setting P0191 code when I come to a stop and sit for few seconds as long as your moving will never set code. Running fine no starting issues. Any ideas Thanks