ECM stands for “Engine Control Module”. It is an important component that all modern vehicles contain. This module takes information from various sensors of the engine and implements that information for tuning the engine spark. When it fails, it can cause all sorts of issues with the vehicle. Sometimes, ECM makes the car undrivable. A faulty ECM can be recognized by its symptoms. If you know the symptoms, then you can spot the issue timely and stay ahead of the situation by getting them fixed.