Your vehicle's O2 sensor plays a significant role in its performance and if it's faulty, it's not something you should ignore ...

A bad oxygen sensor, mass air flow sensor, manifold pressure sensor, throttle position sensor, a stuck-open exhaust gas recirculation (EGR) valve or an engine vacuum leak can cause a lean running ...

Unless Apple finds a way to develop a blood oxygen sensor that doesn’t infringe the patent in question, the functionality might not be back until the company unveils the Apple Watch Series 14.