An oxygen sensor (O2 sensor) plays a vital role in engine performance and emissions control by measuring residual oxygen in exhaust gas and helping the ECU regulate the air-fuel ratio. Learn how oxygen sensors work, the differences between narrowband and wideband types, common failure symptoms, diagnostic methods, and when replacement is necessary.
A PM (particulate matter) sensor and a NOx (nitrogen oxide) sensor perform different functions in a diesel exhaust aftertreatment system.
This guide explains how automotive particulate matter (PM) sensors work, where they are installed, and how they support diesel particulate filter (DPF) monitoring. It covers common failure symptoms, diagnostic trouble codes, sensor lifespan, replacement considerations, and key factors to evaluate when sourcing PM sensors for automotive applications.
Learn the key differences between MAP and MAF sensors, including how they work, common symptoms of failure, diagnostic methods, and replacement tips for automotive applications.
Learn how a throttle body assembly works, explore its key components and types, and discover maintenance, replacement, compatibility, and OEM procurement considerations.
Bad TPS symptoms include poor throttle response, hesitation, rough idle, stalling, reduced power, and shift problems. Learn 10 common TPS failure symptoms, how to diagnose faults, and when to replace the sensor or throttle body.
