Being proactive and making repairs to your car at recommended mileage intervals saves time and money and helps eliminate breakdowns.

Using an inexpensive OBD-II scanner can save you money, time, and frustration.

P0171 is a diagnostic trouble code that means the engine’s air-to-fuel mixture on Bank 1 is too lean, with too much air ...

Discover the 5 most common Mazda DTC codes and their fixes. We review P0171, P2096, P0126, P0300, and P0420 to help clear ...

Gilbert Smith is an automotive journalist with over five years of specialized research and writing experience. Before joining CarBuzz in 2024, he produced in-depth buyer’s guides and feature articles ...

When the check engine light comes on, you may hesitate taking it to a mechanic who will charge you for a non-problem. Learn ...

In Arduino applications often the 'raw' value of a sensor is mapped upon a more usable value. E.g. the value of analogRead() 0 .. 1023 is mapped onto 0 .. 5.0 Volt. This is often done by the map() ...

Forbes contributors publish independent expert analyses and insights. Jim Gorzelany is a veteran automotive journalist. This voice experience is generated by AI. Learn more. This voice experience is ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...

This is a comprehensive Arduino library to obtain ozone (O3) concentration in the air with the Winsen MQ131 sensor. The library supports both versions of the sensor (low concentration and high ...

This article was updated in November 2025 with new information. You know you’ve earned your DIY stripes when you can stay calm the moment something goes wrong. And with cars, that moment usually ...

P0420 is a well-recognized error code within the automotive industry, notorious for its persistence. Luckily, this article is designed to guide you through ...