Audi A4 B8 8K A5 8T 2.7 TDI 190HP CGKA Engine Control ECU 8K1907401K Automatic

Audi A4 B8 8K A5 8T 2.7 TDI 190HP CGKA Engine Control ECU is a factory-original electronic engine control unit designed for Audi vehicles equipped with a 2.7 TDI engine and an automatic transmission. It is responsible for the precise management of engine operation, ensuring stable parameters, proper communication with other modules, and maintaining driving characteristics in accordance with the manufacturer's specifications.

Specifications and technical data

• SKU: 8K1907401K
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K1907401K
• Substitutable numbers: 8K1907401K, 8K1 907 401 K
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and role in the powertrain

The presented engine control unit is part of the Electronic control modules and ECUs group, responsible for the ongoing analysis of sensor signals and the control of actuators in the 2.7 TDI diesel engine. The module works in conjunction with the automatic transmission, coordinating factors such as fuel dosage, injection timing, and load response to maintain smooth gear shifting and proper dynamics at 190 HP of power.

By using an original control unit, software consistency with the vehicle's electrical architecture is maintained, which reduces the risk of communication errors in the CAN bus and integration issues with other onboard systems.

Benefits of using an original engine control unit

Using a dedicated control unit in an Audi A4 B8 or A5 8T with a 2.7 TDI engine provides a number of practical benefits:

• Stable engine operation – proper control maps and operating logic matched to the specific engine and automatic transmission configuration.
• Full compatibility with factory safety and comfort systems, such as driver assistance systems or comfort modules.
• Simplified diagnostics – the control unit works correctly with service testers, which speeds up the localization of potential faults.
• The ability to maintain factory fuel consumption and performance parameters without the need for compromises typical of universal solutions.

Integration with the automatic transmission

This engine control unit is configured to work with an automatic transmission, which is crucial for driving smoothness and the durability of the powertrain. The controller transmits and receives signals related to load, torque, and current gear ratio, ensuring that:

• gear shifts occur at the appropriate RPM ranges,
• jerking during acceleration and downshifting is minimized,
• the engine and transmission operate with consistent control logic, which promotes their longevity.

Proper matching of the control unit to the powertrain configuration is particularly important in diesel units, where the precision of torque control affects driving comfort and engine refinement.

Characteristics of the used product

The offered engine control unit is a used component, which allows for an economical repair of the vehicle while maintaining the manufacturer's original specifications. Such modules, sourced from dismantling, are a popular choice for professional repairs when the goal is to maintain the factory electrical architecture and software compatibility.

Before installation, it is recommended to perform standard service procedures, such as diagnostics, potential matching or adaptation in the vehicle, and verification of compatibility with the equipment configuration, which is a typical procedure when replacing control units in modern cars.

Technical support and further reading

If you want to better understand how original electronic modules affect vehicle behavior and why it is worth choosing proven components from dismantling, read the article: Audi and emotions in their purest form – how used parts help maintain the brand's DNA. You will find practical information there on selecting components that allow you to preserve the characteristic properties of Audi models.

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