Audi A5 8T Q5 8R 3.0 TDI CCWA 240HP Quattro Engine ECU 8R0907401J Automatic

Audi A5 8T Q5 8R 3.0 TDI CCWA 240HP Quattro Engine ECU Automatic is an original component from the Electronic control modules and ECUs group, designed for use with the 3.0 TDI CCWA unit and Quattro drive system in Audi vehicles. The ECU is matched to the automatic transmission configuration, which allows for proper communication with the drivetrain and onboard systems.

Specifications and technical data

• SKU: 8R0907401J
• Mark: Audi
• Condition: Used
• OEM Part Number: 8R0907401J
• Substitutable numbers: 8R0907401J, 8R0 907 401 J, 0281016453, 0 281 016 453
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and compatibility

The presented engine ECU is designed for use in Audi A5 (8T generation) and Audi Q5 (8R generation) models with the 3.0 TDI engine (CCWA code) and Quattro drive. The module's design is prepared for operation with an automatic transmission, ensuring consistent performance of the drivetrain, fuel injection system, and driver assistance functions.

As an OEM-class component, the ECU is factory-adapted to the electrical architecture of these models, which facilitates integration with the vehicle's wiring, CAN bus, and other control units. Proper selection based on the part number and interchangeable numbers allows for maintaining the correct engine maps and system logic.

Function in the drivetrain

The engine ECU in the 3.0 TDI CCWA Quattro configuration is responsible for precise control of the combustion process, fuel dosing, boost pressure, and interaction with the automatic transmission. This enables stable engine performance, proper throttle response, and predictable vehicle behavior under various load conditions.

The module also manages communication with other vehicle systems, such as traction control, safety systems, or comfort functions, which is particularly important in Quattro-equipped versions. A correctly selected ECU helps maintain factory engine characteristics and compatibility with the rest of the vehicle's electronics.

Use of a pre-owned ECU

Choosing a pre-owned engine ECU for an Audi is a solution that allows for reduced repair costs while maintaining the manufacturer's original specifications. A module sourced from dismantling, when properly selected and prepared for installation (coding, adaptation, and potential immobilizer matching), can effectively replace a damaged factory component.

To better understand the principles of selecting and installing such components, it is worth reading our guide on used automotive electronics – it discusses compatibility issues, HW/SW markings, and practical application examples in detail: Used automotive electronics – ECU modules and second-hand sensors.

Benefits of using an original Audi ECU

Using an original Audi engine ECU in a version designed for an automatic transmission ensures software consistency with the rest of the vehicle's systems. This reduces the risk of communication errors, transmission issues, or malfunctions of the Quattro drive functions. For workshops and users, this means a more predictable repair process and easier diagnostics.

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

Summary

Audi A5 8T Q5 8R 3.0 TDI CCWA 240HP Quattro Engine ECU Automatic is a solution intended for users and service centers that want to restore the proper operation of the 3.0 TDI unit with Quattro drive and an automatic transmission, while maintaining the factory logic of the drivetrain. A properly selected and prepared ECU module provides a solid foundation for further diagnostics, adaptation, and vehicle operation in accordance with the manufacturer's specifications.