Nov 26, 2020 · My 2018 GMC 2500 Denali 2500 Duramax L5P Has 2 codes. P129F & P228C. It still runs but you have to feather the throttle to get it up to speed. It also goes...

Nov 5, 2019 · Generic P228C - Fuel Pressure Regulator 1 Exceeded Control Limits Pressure Too Low P228C Possible Causes Clogged or Damage Fuel Filter Faulty Fuel Pressure Regulator Faulty Fuel …

Jan 9, 2020 · Got a call the other day that the Malibu displayed the CEL/Reduced Engine Power. Pulled the codes and got P228C and P00C6. Started by replacing the Fuel Pressure Switch (ACDELCO) on …

Oct 20, 2019 · Any one have any info on this code in relation to the l5p? Looks like it’s fuel regulator 1 low pressure generic code. Anyone have this issue and have it repaired? I searched and found …

Sep 18, 2020 · 2013 malibu with 150k. I have the blue driver scanner and it showed a live fuel rail pressure of 70-80 and it even if i clear the codes it doesn't want to rev over 4K. Tried two different …

Nov 22, 2024 · Your truck's codes (P1002, P129F, P228C) and symptoms suggest a fuel system issue, likely involving the high-pressure fuel pump (HPFP). Start by inspecting the fuel filter for debris or …

Jan 9, 2018 · This past Sunday in Parsippany NJ (temperature approximately 20F) my truck lost power while cruising on the highway at about 70 MPH. Check engine light comes on and dashboard …

Jun 10, 2022 · I just purchased this 2019 Chevy Duramax 6.6 liter 2500HD four months ago. It sat for three months while I drove truck over the road for another company. Now I am using it as a hotshot …

Dec 15, 2024 · New here looking for some help. I have a 2017 L5P Chevy 2500 w/ 200000 miles on it. The truck has gone into reduced power mode when towing and I got code P228b and P228c. Every …

May 7, 2024 · I have been reading past threads on here about similar issues, but to keep it short, truck was running fine, no signs of any issues, stop at a customers house and do a job, i go to leave and …