Audi A3 8Y 30 TFSI 1.5 DXDE 115HP Engine Module Control Unit 05E907309CA Manual

Audi A3 8Y 30 TFSI 1.5 DXDE 115HP Engine Module Control Unit Manual is an original electronic control module designed for a petrol engine paired with a manual transmission. This component from the Electronic control modules and controllers group is responsible for precise engine management, ensuring stable parameters and proper communication with other vehicle systems.

Specifications and technical data

• SKU: 05E907309CA-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 05E907309CA
• Substitutable numbers: 05E907309CA, 05E 907 309 CA, 05E906019CN, 05E 906 019 CN, 0261S107KJ, 0 261 S10 7KJ
• Fuel type: Petrol
• Gearbox type: Manual
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The presented module is an Engine Control Unit dedicated to the petrol engine in the Audi A3 8Y generation, 30 TFSI version with the DXDE unit producing 115 HP, equipped with a manual transmission. The controller manages, among other things, fuel injection, ignition timing, auxiliary system operation, and monitors numerous sensors, which translates into proper engine performance and compliance with factory control maps.

By using the correct type of ECU, it is possible to maintain software consistency with the configuration of a specific engine variant, which is important for both performance and service diagnostics, as well as compatibility with factory safety systems.

Benefits of using an original ECU module

Using an original controller in the Audi A3 8Y 30 TFSI allows for maintaining the factory engine operating parameters without the need to interfere with the wiring harness or system architecture. This solution is particularly beneficial for:

• repairs following the failure of an existing controller,
• restoring full functionality of the injection and ignition system,
• maintaining compliance with factory diagnostic procedures.

A used module from this series, when correctly selected based on the OEM number and engine configuration, represents an economical alternative to a new part while maintaining the original engine operating characteristics and compatibility with the vehicle's installation.

Selection, compatibility, and technical aspects

Before installation, it is crucial to match the controller to the specific vehicle configuration, taking into account the fuel type, transmission type, and software version. This ECU model is designed for a petrol unit paired with a manual gearbox, which is significant for torque control logic, driver assistance functions, and communication with other modules in the vehicle network.

In workshop practice, the possibility of matching a used controller through appropriate coding or adaptation is often utilized, which is why it is important to maintain consistency with factory markings and technical parameters. A properly selected ECU module helps reduce the risk of communication errors, starting problems, or improper operation of onboard systems.

Condition, service application, and technical support

The offered controller comes from the used electronic components segment, which allows for cost optimization of repairs while maintaining the manufacturer's original specifications. Such modules are frequently used in professional workshops and by advanced users who expect consistency with the vehicle's factory electrical architecture and predictable drivetrain behavior.

If you want to better understand how to safely select and install used engine controllers and other electronic components, it is worth checking out the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, where selection by OEM number, hardware and software compatibility, and practical installation tips are discussed.

Expanding upgrades in the Audi engine control area

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 control modules, auxiliary controllers, or electronic units managing the drivetrain, check out the available parts in the Audi electronic control modules and controllers category.