09-11-2024, 03:42 PM
Hey, I’m seeing both P0171 and P0174 codes on my 2015 Ford Mustang, which apparently means the engine is running lean on both banks. I’ve noticed a lack of power, and the car hesitates when I accelerate. Could this be a vacuum leak, or maybe a problem with the mass airflow sensor? I don’t want to start replacing parts without knowing what’s wrong. Anyone else dealt with this? I’d appreciate any advice or tips on how to troubleshoot before I start spending money on unnecessary repairs!