It might be time to check your car's Engine Control Unit (ECU), also known as the Powertrain Control Module (PCM) or Engine Control Module (ECM). Understanding the role of the ECU in your vehicle's operation is crucial to maintaining optimal performance and efficiency. In conclusion, ECU, PCM, and ECM are essential components of your vehicle's control system, ensuring smooth operation and optimal performance. By familiarizing yourself with these modules and their functions, you can troublesho...