Mastering the Art of Engine Code P0171 A Diagnostic Odyssey

In this video, I show you how I troubleshoot a Check Engine Light (CEL) / Diagnostic Trouble Code (DTC) P0171, System Too Lean Bank 1. Your vehicle may get the P0171 code due to dirty sensors or a faulty fuel pump. Specifically, mass airflow sensors are known to trigger this error code, as this ... The engine seems to be running really rich (can smell a lot of gas at startup). I've checked for exhaust leaks, did my best to check for a vacuum leak, and ... On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. Note: This DTC is very similar to P0174, and in fact your vehicle ... That's a lean code. Any unmetered air that gets in the system can cause that as well as low fuel pressure. If your canister hose was loose ... The reading is too lean (i.e. too much air or not enough fuel). P0171 is a bank one reading lean, P0172 is for bank two reading lean. If the PCM is saying is ... If you're reading this, you've likely seen the OBD-II scanner flash the P0171 fault code – an indication that the engine control module (ECM) ... The P0171 code means your engine is running lean, with too much air and not enough fuel. Common causes include vacuum leaks, ... Claim your FREE engine code eraser https://free.nonda.co​ ===== How to Fix P0171 =========== Engine Code P0171 Saving Repair Parts: MAF ... the same lean code on both banks indicates it is a fault that affects the whole engine, so less likely to be an O2 sensor. I would take another ...