Why it matters: O2 sensors feed critical data to your ECU, helping maintain the ideal air-fuel ratio for performance, efficiency, and emissions control. Reading the signals: Healthy upstream sensors ...

The ionosphere is of great importance to shortwave radio transmissions, since it allows radio waves to be refracted and ...

In 2026, the gap between professional diagnostics and DIY capability has narrowed significantly, thanks to a new generation of Bluetooth OBD2 scanners and smartphone apps that cost less than a tank of ...

Dive into The Register's online archive of incisive tech news reporting, features, and analysis dating back to 1998 ...