Welcome to Basic Automotive Engineering: Onboard Diagnostics, an online course designed to introduce you to the fundamentals of automotive diagnostics. This course will provide you with the knowledge and skills needed to understand and diagnose issues in modern vehicles using onboard diagnostics (OBD) systems.

The course is divided into several modules, each covering a different aspect of OBD. We will start by discussing the history and evolution of OBD systems, including the transition from OBD-I to OBD-II. We will then move on to the basic principles of OBD, including how sensors and actuators work, and how they are used to monitor and control various vehicle systems.

Next, we will explore the different types of diagnostic trouble codes (DTCs) that can be generated by OBD systems, and how to interpret them. We will also discuss the various tools and techniques used to access and retrieve DTCs, including scan tools and diagnostic software.

Finally, we will cover some common diagnostic procedures, including how to perform a basic scan of the vehicle’s systems, and how to use DTCs to diagnose specific issues. We will also discuss some best practices for diagnosing and repairing common problems, and how to use OBD systems to perform routine maintenance tasks.

By the end of this course, you will have a solid understanding of the principles of onboard diagnostics, and how to use them to diagnose and repair issues in modern vehicles. You will also have the skills and knowledge needed to continue your education in automotive engineering, and to pursue a career in the automotive industry.