Modern cars are equipped with an Engine Control Module (ECM). This component is a computer and features many of the same parts as any other computer, including a microprocessor that receives and transmits information from various components in your car. While problems with ECMs are not all that common, they can occur. This guide will discuss what to look for to determine if your car’s ECM is failing.
Why Does My Vehicle Need an ECM?
Your car’s ECM receives information from several sensors throughout the car’s engine and transmission and makes adjustments to the function of these components automatically. These adjustments are based on several factors and are designed to keep your vehicle running its best with little trouble. Some of the most important processes that the ECM monitors and adjusts are fuel mixture, engine timing, transmission shift timing, and engine valve timing. Without an ECM, you would have to manually adjust some of these things to keep your car running correctly.
Common Causes of ECM Failure
The ECM, being a computer, is prone to some of the same issues that any computer can experience. Most of these issues will be electrical and usually need to be identified by a professional. One of the more common issues with the ECM is shorts in wiring throughout the car’s powertrain. Blown fuses and aftermarket part installation can also cause issues with the ECM. The ECM will need to be reset on some vehicles after changing the battery or other electrical components.
Diagnosing the Problem
ECM problems can cause several issues with your car, including the check engine light, trouble starting, rough shifting, or poor fuel economy. ECM problems typically need to be diagnosed by a professional. This is because your mechanic will have access to a diagnostic computer system that will scan your car’s ECM and be able to identify the problem. However, a blown fuse can cause ECM failure, which can be checked by locating, removing, and visually inspecting the fuse. Otherwise, problems with your vehicle’s ECM will need to be fixed by a professional.
Your car’s ECM is a highly technical component that can fail like any other vehicle component. While ECM failure is not very common, it can happen, and if it does, it’s best to have the issue resolved by a professional. If you notice any of the symptoms of ECM failure, see your car care professional right away.
