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  1. What Is the Electronic Control Module? - AutoZone

    While the terms ECM (Electronic Control Module) and ECU (Electronic Control Unit) are often used interchangeably, they have distinct functions. The ECM specifically manages the engine, …

  2. What Is An Engine Control Module (ECM) & How Does It Work?

    Nov 2, 2018 · The Engine Control Module (ECM), also called the Engine Control Unit (ECU), ensures that your vehicle operates at optimal performance. The ECM monitors most of the …

  3. Engine control unit - Wikipedia

    An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled …

  4. What is the Electronic Control Module (ECM)? - Cummins

    Nov 3, 2023 · Learn about Electronic Control Module (ECMs) and how they optimize engine performance and provide efficiency and reliability in diverse vehicle technologies.

  5. 5 Symptoms of a Bad ECM (And Replacement Cost)

    Jun 4, 2025 · The engine control module (ECM), also referred to as the engine control unit (ECU), is a critical component which links your engine to the central computer of your vehicle.

  6. How the Engine Control Module Works | HowStuffWorks

    So, on top of it all, the engine control module, unit, or what have you, runs through a recalibration test every time you turn on the car, just to make sure signals don't get crossed. The ECM is a …

  7. Bad Engine Control Module (ECM): Symptoms, Repair ...

    Apr 11, 2025 · The ECM, or engine control module, is a computer that manages engine operation by using data from sensors to control components like fuel injectors and ignition coils. Modern …

  8. Engine Control Module | ECM | PCM | ECU - Flagship One

    Our Engine Control Modules (ECM) are a crucial component in ensuring your vehicle's optimal performance. They regulate a variety of your engine's functions, such as fuel mixture, ignition …

  9. How Does an Engine Control Module (ECM) Work? - Blessed ...

    Aug 18, 2025 · The Engine Control Module (ECM), often referred to as the engine’s “brain,” is a sophisticated onboard computer that controls engine operation. It receives inputs from …

  10. Understanding Engine Control Modules (ECMs) and Their ...

    Apr 1, 2025 · An engine control module (ECM) is a computer that monitors and controls the operation of a vehicle’s engine.