Audi A4 B8 A5 8T 2.7 TDI 190HP CGKA Engine Control ECU 8K1907401H Automatic

Audi A4 B8 A5 8T 2.7 TDI 190HP CGKA Engine Control ECU is a factory-original electronic control unit designed for precise management of the engine's operation. It is responsible for advanced control of fuel injection, turbocharging, and coordination with the automatic transmission, which translates into stable performance characteristics and predictable power delivery. Thanks to the use of original Audi architecture, the module ensures full compatibility with the vehicle's factory electrical installation and onboard systems.

Specifications and technical data

• SKU: 8K1907401H
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K1907401H
• Substitutable numbers: 8K1907401H, 8K1 907 401 H, 8K1907401A, 8K1 907 401 A, 0281015894, 0 281 015 894
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The presented electronic control unit is dedicated to the 2.7 TDI engine with the CGKA code in Audi A4 B8 and Audi A5 8T models equipped with an automatic transmission. Its task is to coordinate the operation of the diesel engine, including managing fuel dosage, boost pressure, auxiliary equipment, and communication with other control units via the vehicle's CAN bus network. A correctly selected control unit is crucial for maintaining factory power parameters, smooth operation, and throttle response.

Benefits of using an original Audi module

Using an original control unit from the Electronic control modules and ECUs category allows you to maintain compliance with the factory software and control maps intended for the specific engine and automatic transmission configuration. In practice, this means:

• stable engine operation across the full load range,
• proper cooperation with the automatic transmission,
• correct communication with safety and comfort systems,
• easier diagnostics using factory service tools.

For workshops and users, this means a lower risk of compatibility issues, CAN network errors, or unpredictable engine behavior after installation.

Selection, installation, and technical aspects

The control unit is a component that requires precise matching to the specific vehicle configuration; therefore, before installation, it is worth verifying compatibility with your engine version and transmission type. As a used part, the module may require adaptation or programming for a specific vehicle, including matching it to the immobilizer and the existing network of control units. Professional installation and configuration at a specialized service center allow you to fully utilize the factory Audi control logic and minimize vehicle downtime.

Application in diagnostics and electronic system repairs

In the event of starting problems, unstable engine operation, communication errors with the automatic transmission, or recurring fault codes in the engine control area, replacing the control unit with a functional unit from the same family is often an effective solution. This type of module is suitable for both standard repairs and more complex diagnostic work, where it is necessary to rule out electronic damage as the source of the problem.

If you are interested in the broader context of how control modules work in modern cars and want to better understand the relationships between the engine control unit and other systems, it is worth checking out our guide material on premium brands – you may find the article on servicing iDrive systems and electronic modules in BMW 3 and 5 series using salvaged parts helpful, as it discusses the practical aspects of working with advanced automotive electronics.

Expanding work in the area of Audi electronics

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, auxiliary modules, or engine management systems, check out the available parts in the Audi electronic control modules and ECUs category.