P0174 Code Meaning, Causes, Symptoms & Tech Notes
The P0174 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0174 is set in along with the P0171 code, it is highly likely that the …
P0174 – System Too Lean (Bank 2) - Mechanic Base
Feb 12, 2023 · How to diagnose the P0174 code easily. Find the meaning, symptoms, and the most common causes of the P0174 code - Full professional diagnostic guide.
P0174 Code? Here’s How to Fix It – Quickly and Easily
Dec 31, 2025 · The P0174 code indicates a lean fuel condition on bank 2 of the engine, which can lead to poor fuel economy, rough idling, and engine damage. Vacuum leaks, faulty oxygen sensors, …
P0171 & P0174 Trouble Codes - Diagnosis, Causes, Symptoms ... - AutoZone
P0171 or P0174 readings indicate too lean of a system in one of your cylinder banks. Learn common causes and solutions to these trouble codes.
P0174 – System Too Lean Bank 2 - Causes, Symptoms and Fixes
Jan 27, 2025 · What does the P0174 – System Too Lean Bank 2 mean? The P0174 code indicates a “System Too Lean” condition specifically for bank 2 of your engine. In simpler terms, it means that …
OBD-II Trouble Code: P0174 System Too Lean (Bank 2)
Basically this P0174 code means that the upstream oxygen sensor in bank 2 reporting a lean condition (too much oxygen in the exhaust). On V6/V8/V10/V12 engines, Bank 2 is the side of the engine that …
What Does the P0174 System Too Lean Bank 2 Code Mean?
Dec 16, 2025 · Complete guide to diagnosing and fixing the P0174 “System Too Lean Bank 2” engine code. Find the cause, test procedures, and repair.
P0174 Code: System Too Lean (Cylinder Bank 2) - CarParts.com
Feb 20, 2025 · More specifically, a P0174 is most often reported on Chevy and Ford vehicles. If your vehicle is triggering a P0174 code, read our guide below to learn more about the issue and find out …
P0174 Code Explained: 6 Symptoms, Causes & Pro Fixes to Save You …
A P0174 code, “System Too Lean (Bank 2),” means your engine’s Bank 2 cylinders are running with too much air or too little fuel, triggering the check engine light and risking damage if ignored.
P0174 – Is Your Engine Running Too Lean (And How To Fix It)?
Nov 10, 2022 · What does a P0174 OBD diagnostics trouble code mean? Read on to find out all about its causes, symptoms, diagnostic process, and repair costs.