I’m going to go over some common issues causing the P0171 and P0174 error codes in Chevy and GM vehicles, indicating a system too lean in both Bank 1 and Bank 2.
Under standing fuel trim numbers can aid greatly in get to the source of the problem. We start by conducting a smoke test on the intake to detect any leaks. Next, we assess the condition and performance of the mass air flow sensor and fuel pressure test to ensure they meet specifications.
Further inspections include the PCV valve and the brake booster, along with other critical components like fuel pressure regulator, that could lead to a lean-running engine.
Whether you’re a DIY enthusiast looking to understand more about your vehicle or a professional mechanic honing your skills, this video provides step-by-step guidance on diagnosing and fixing lean engine problems and understanding fuel trim reading on a scanner.
#ChevyRepair#LeanBank1Bank2#AutoRepair#CarMaintenance#DIYMechanic#P0171#P0174#FlatRateMechanic
Subscribe to my youtube channel here: https://goo.gl/j1pCfn For the most common automotive fixes to the most common car and truck problems. DIY auto repair to help you save money. Connect with me:
Website: https://flatratemechanic.com
Facebook: / diyrepair
Check out The Flat Rate Mechanics Tool Store on Amazon https://goo.gl/M8MpdC
