VW Polo 6R 1.4 TSI CTHD 160HP Engine Control Unit ECU 03C906026AF Manual

The VW Polo 6R 1.4 TSI CTHD 160HP Engine Control Unit ECU Manual is a factory original engine control module from the Electronic Control Modules and Controllers group, designed for gasoline engines paired with a manual transmission. This solution is engineered for precise engine management, ensuring stable parameters and proper communication with other vehicle systems.

Specifications and technical data

• SKU: 03C906026AF
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 03C906026AF
• Substitutable numbers: 03C906026AF, 03C 906 026 AF, 03C907309Q, 03C 907 309 Q, 0261S08167, 0 261 S08 167
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Intended Use and Function of the Engine Controller

The presented ECU controller is responsible for comprehensive control of the gasoline engine in the VW Polo 6R model with a 1.4 TSI 160 HP unit, designated CTHD, operating with a manual gearbox. The module monitors, among other things, fuel injection, ignition timing, turbocharger operation, and interaction with sensors and actuators, which translates to proper dynamics, smooth operation, and fuel consumption.

Thanks to its factory architecture, the controller is optimized for the specific drive configuration, which facilitates compliance with the vehicle's original software and reduces the risk of communication errors within the CAN network.

Benefits of Using an Original ECU

Using an original control module in a Volkswagen vehicle allows for maintaining engine operating parameters consistent with the manufacturer's original specifications. In practice, this means:

• correct cooperation with the existing wiring harness and sensors,
• retention of factory control maps for the 1.4 TSI CTHD unit,
• stable operation of onboard systems related to the ECU,
• easier diagnostics using standard service tools.

The module belongs to the Electronic Control Modules and Controllers category, meaning it is designed as a central element for engine management, and its construction takes into account the requirements for resistance to conditions in the engine bay.

Technical Characteristics and Compatibility

The controller is designed for a gasoline-powered engine configured to work with a manual transmission. This combination of parameters is crucial when selecting an ECU, as the software and hardware configuration are closely linked to the fuel type and transmission type.

The module has an assigned OEM part number and a set of interchangeable numbers, which facilitates verification of compatibility with a specific vehicle instance. When selecting, it is advisable to use the manufacturer's designations and vehicle data (model, year, engine code) to ensure full hardware and software compatibility.

Condition, Application, and Installation Recommendations

The offered controller is a used part, which in the case of automotive electronics often represents a reasonable compromise between cost and functionality. Before installation, it is recommended to verify compatibility with the vehicle and – depending on service procedures – potentially adapt the software (adaptation, coding, immobilizer) by a specialized workshop.

Choosing a used ECU is particularly beneficial for repairs where restoring the vehicle's factory configuration without altering the electrical system is crucial. This can reduce vehicle downtime and minimize the risk of problems arising from the use of unsuitable replacements.

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other parts from the same group, such as controllers, management modules, or control units, check the available parts in the Volkswagen Electronic Control Modules and Controllers category.

Technical Support and Additional Information

When selecting a used engine controller, correct matching by OEM number, interchangeable numbers, and hardware configuration is particularly important. To better understand how to safely choose used ECU modules, what to look for regarding HW/SW compatibility, and what the installation process and common user questions look like, it is worth reading the guide: Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?

Through informed selection and correct installation, the ECU controller for the VW Polo 6R 1.4 TSI CTHD can effectively restore proper engine operation and ensure stable functioning of the vehicle's electronic systems.