The oxygen (O2) sensor is a vital automotive component that monitors oxygen levels in exhaust gases to ensure the engine’s air-fuel mixture is optimal for efficient combustion and reduced emissions. Positioned in the exhaust manifold or pipe, it generates a voltage signal—low (~0.1V) for lean mixtures with excess oxygen, and high (~0.9V) for rich mixtures—feeding data to the ECU for real-time adjustments that boost fuel economy and cut pollutants like HC, CO, and NOx. A faulty O2 sensor triggers

"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

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