Power electronic converters have become an essential element in a wide variety of applications, such as electric drives, distributed power generation, electric vehicles, among others. Failures in electronic converters lead to operational and safety difficulties, therefore, detection and diagnosis contribute to the reliability of the system, which is part. The aim of this article is to review fault-detection and diagnosis methods in power converters based on electrical measurements. For this, a systematic review is used to establish the main faults, methods, applications, and challenges in power electronic converters. In fact, methods consulted are focused on the capacitor at 20.6%, the switching transistor at 60.3%, and other components at 19.1%.