Engine Control Unit Mercedes W245 B200 CDI OM640.941 140HP ECU A6401508334

Mercedes W245 B200 CDI OM640.941 Engine Control Module 140 HP is a specialized component from the Electronic Control Units and Controllers group, designed for precise management of the diesel engine's operation. It is responsible for controlling combustion parameters, fuel dosage, and interaction with other vehicle systems, ensuring stable and predictable diesel engine performance. This is a solution for users looking for a proven, factory-original controller for their Mercedes B-Class with the OM640.941 engine.

Specifications and technical data

• SKU: A6401508334-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6401508334
• Substitutable numbers: A6401508334, A 640 150 83 34
• Fuel type: Diesel
• Category: ECUs & Computer Modules

Purpose and Function of the Engine Controller

The presented ECU module is dedicated to the Diesel powertrain in the Mercedes W245 B200 CDI model with the 140 HP OM640.941 engine. Its task is to continuously process signals from sensors, control fuel injection, manage auxiliary equipment, and coordinate the interaction of the powertrain with other vehicle systems. This allows the engine to maintain proper operating parameters under various load and temperature conditions.

Benefits of Using an Original ECU Module

Using an original controller in the Mercedes B200 CDI allows for the preservation of the engine's factory operating characteristics. The module is designed for a specific Diesel fuel type, which promotes correct fuel dosing and stable operation of the injection system. A properly selected ECU reduces the risk of communication errors within the vehicle network, facilitates diagnostics, and ensures predictable responses to driver commands.

For the user, this means, among other things:

• consistent engine operation with factory vehicle systems,
• easier computer diagnostics and service,
• maintenance of operating parameters in line with manufacturer specifications.

Characteristics of a Used Module

The offered controller comes from the secondary market, which helps reduce repair costs while maintaining the original design and intended use. A used ECU module is a good solution when the existing controller has suffered electronic or mechanical damage, and repair is not cost-effective. In many cases, proper matching of designations and correct configuration are sufficient to restore full functionality to the engine control system.

Selection, Installation, and Compatibility

When selecting a controller for the Mercedes W245 B200 CDI, it is crucial to pay attention to compatibility with the OM640.941 engine and the Diesel fuel type. Matching by part numbers and configuring the module according to service procedures using appropriate diagnostic software is recommended. Installation should be performed by a workshop experienced with Mercedes electronics to minimize the risk of communication problems within the vehicle network and ensure correct assignment of the controller to the specific car.

To better understand the principles of selecting and installing used ECU controllers, it is worth consulting a guide that describes selection by VIN/OEM, hardware and software compatibility issues, and common user questions – this is thoroughly discussed in the article Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.

Expanding the Control System in a Mercedes

If you are planning a comprehensive repair or modernization of the engine area in your Mercedes and need other components from the same group, such as additional controllers, engine management modules, or related electronic systems, check the available parts in the Mercedes Electronic Control Units and Controllers category.

Summary

The Mercedes W245 B200 CDI OM640.941 Engine Control Module 140 HP is a solution for users who want to restore proper operation of the diesel engine in their vehicle by using a factory-original ECU module. A properly selected and configured controller supports stable diesel engine operation, facilitates diagnostics, and allows for maintaining driving parameters in line with manufacturer specifications, offering a practical alternative to new, significantly more expensive components.