Audi A4 B7 Engine Control Unit ECU 140 HP KIT 2.0 Diesel Automatic 03G906016LR

Audi A4 B7 Engine Control Unit ECU 140 HP KIT 2.0 Diesel Automatic is a component from the Electronic control modules and ECUs category, designed to work with a diesel engine and an automatic transmission. This used control unit kit allows for the restoration of proper drivetrain operation while maintaining factory control logic and stable engine performance parameters.

Specifications and technical data

• SKU: 03G906016LR
• Mark: Audi
• Condition: Used
• OEM Part Number: 03G906016LR
• Substitutable numbers: 03G906016LR, 03G 906 016 LR
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the control unit

The presented control unit is dedicated to the Audi drivetrain with a 140 HP diesel engine, working in conjunction with an automatic transmission. It is responsible for precise management of fuel injection, air intake, auxiliary equipment operation, and communication with other vehicle modules. As a result, the drivetrain maintains stable performance, and the throttle response remains predictable and consistent with factory specifications.

The KIT version facilitates matching to a specific vehicle configuration, which reduces the risk of communication issues within the vehicle network and minimizes the need for additional installation modifications.

Benefits of using an original module

Choosing a used, original control unit from this group allows for maintaining software consistency and operating parameters with the rest of the electronics in the Audi. The module is factory-adapted for use with a diesel engine and an automatic transmission, which translates into:

• proper synchronization of engine and transmission operation,
• stable cold and warm starts,
• correct communication with safety and comfort systems,
• preservation of factory control maps without the need for experimental modifications.

Thanks to this solution, it is possible to effectively resolve issues with unstable engine performance, communication errors in the vehicle network, or limp mode related to control unit failure.

Application in a diesel system with an automatic transmission

The control unit has been designed to work with a diesel-powered engine and an automatic transmission, which is crucial for the proper operation of the entire drivetrain. A properly selected module:

• coordinates engine torque with gear shift logic,
• ensures smooth gear changes without jerking,
• maintains proper combustion parameters under various load conditions,
• supports the operation of driver assistance systems that depend on data from the control unit.

Such matching is particularly important in vehicles used daily, where vehicle predictability and minimizing the risk of unplanned service downtime are essential.

Condition, verification, and selection of a used control unit

The offered item comes from the secondary market, which allows for an economical repair of the engine control system while maintaining the original design. Before installation, it is recommended to verify compatibility with the specific vehicle configuration and consult a workshop regarding potential adaptation or programming. A used module of this class is often a reasonable compromise between cost and maintaining factory-level control quality.

To better understand when choosing second-hand electronics is justified and how to safely select such an element for your car, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?

Support in selection and related components

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as additional controllers, management modules, or engine control systems, check the available parts in the Audi electronic control modules and ECUs category.

When considering the choice between a used original part and a replacement, the following practical material explaining the differences and selection criteria may also be helpful: 5 reasons why a used OEM part is a better choice than a replacement.