1. Oxygen (O₂) Sensor Explained — What It Does, Where It Is & How to Check Air-Fuel Ratio In this detailed video we explain everything about the car oxygen (O₂) sensor — what it is, how it works, where it’s mounted, and how it helps the ECU control the air-fuel ratio (AFR). Whether you’re a DIY mechanic or a car enthusiast, this guide covers both theory and practical checks you can do with basic tools. Call to action (use in video & description): Like, subscribe and click the bell if you found t

"Oxygen Sensors Demystified: How They Work & Why They're Crucial for Your Engine" Learn how oxygen sensors keep your engine running efficiently! This video covers their role in fuel mixture control, how they generate voltage signals, and key maintenance tips to avoid common pitfalls. A must-watch for mechanics and car owners alike! Key Insights: 1. Core Function: The oxygen sensor detects oxygen levels in exhaust gases to help the ECU maintain the ideal air-fuel ratio (14.7:1) for optimal combus