Modern cars don’t rely on just one ECM. 👉 They have multiple control modules: ECM BCM ABS module Airbag module 👉 These modules communicate through: 👉 CAN Bus (Controller Area Network) If CAN fails: No communication ❌ Multiple errors ❌ Car may not start ❌ 👉 This is a critical system 🧠 What is CAN … Continue reading How to Diagnose CAN Bus Problems in Cars (ECM Communication Guide)