Car Engine Diagnostics and Repair Fundamentals

Understanding how passenger car engines operate and how to diagnose mechanical and electrical issues is an essential skill for aspiring automotive technicians and enthusiasts. This written course provides a clear, step-by-step introduction to internal combustion engines, electronic control systems, and troubleshooting workflows. You will gain a thorough understanding of engine components, fuel delivery, ignition mechanics, and modern sensor networks. What you will learn: Understand core internal combustion principles and mechanical component functions; Identify symptoms of common mechanical, fuel, and electrical engine faults; Interpret OBD-II diagnostic trouble codes and electronic control unit data; Analyze sensor inputs and actuator operations in modern engine systems; Practice systematic diagnostic procedures for cooling, lubrication, and ignition systems; Apply fundamental safety protocols and routine engine maintenance procedures. The content begins with essential terminology, structural definitions, and baseline mechanical concepts before moving into diagnostic workflows and repair principles. This course is created for complete beginners with no prior mechanical background required. Start reading today to master the basics of automotive engine diagnostics and repair.