Audi Q3 F3 A8 4N 2.5 TFSI Petrol Control Fuel Pump Tank Pump Unit 4N0906093E

Audi Q3 F3 A8 4N 2.5 TFSI Petrol Control Fuel Pump Tank Pump Unit is an original component from the Electronic control modules and controllers group, designed for the petrol fuel system in modern Audi models. It ensures precise control of the in-tank pump operation, stabilizing fuel pressure and supporting the proper performance of the TFSI engine.

Specifications and technical data

• SKU: 4N0906093E
• Mark: Audi
• Condition: Used
• OEM Part Number: 4N0906093E
• Substitutable numbers: 4N0906093E, 4N0 906 093 E
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Purpose and function in the fuel system

The presented controller is a component responsible for the electrical control of the in-tank fuel pump in Audi petrol engines. It works with the vehicle's electrical system, regulating pump efficiency based on engine load, fuel demand, and signals from other electronic modules.

In TFSI systems, a properly functioning fuel pump control module is crucial for:

• maintaining stable fuel pressure at the inlet to the high-pressure system,
• ensuring smooth starting and consistent operation of the power unit,
• reducing power drops resulting from insufficient fuel supply,
• protecting the fuel pump from overload through controlled electrical operation.

Advantages of using an original Audi module

The original module from the Electronic control modules and controllers group is factory-matched to the electrical architecture of Audi vehicles, which translates into:

• reliable compatibility with the installation and wiring harness,
• proper cooperation with other controllers in the vehicle network,
• maintenance of factory fuel system operating parameters,
• reduction of the risk of communication errors and fault codes.

As a result, the module can be used both as a replacement part during repairs and when restoring full functionality to the fuel system after a fuel pump failure or electrical power issues.

Technical characteristics and vehicle integration

The module is designed to work with petrol engines, where fuel pump control is fully electronic. This component:

• receives control signals from the main engine control unit (ECU),
• regulates the voltage and current supplied to the in-tank pump,
• is integrated with the vehicle's installation via dedicated electrical connectors.

This architecture allows for precise adjustment of pump operation to current driving conditions, which promotes stable engine performance and proper cooperation with the vehicle's diagnostic systems.

Condition, selection, and practical application

The item comes from dismantling and is intended for users looking for a tested, original controller for an Audi fuel system. In practice, such a module is chosen when symptoms occur such as:

• problems with starting on a warm or cold engine,
• irregular fuel pump operation or its periodic switching off,
• errors related to pump power supply stored in the engine control unit memory.

Before installation, it is recommended to verify compatibility with the specific engine version and vehicle year, and after installation – to perform computer diagnostics to confirm proper communication with other modules.

System expansion and related components

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other components from the same group, such as pump controllers, engine management modules, or other power controllers, check the available parts in the Audi electronic control modules and controllers category.

For those interested in a broader context of operation and repair of electronic modules in modern cars, tips regarding working with used controllers, adaptation procedures, and diagnostics may be useful. It is worth reading the article describing a practical approach to comfort modules and engine controllers in premium class vehicles: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using parts from dismantling?

Summary

The original fuel pump control module for Audi petrol engines is a solution that allows for restoring the proper operation of the fuel system in vehicles equipped with TFSI units. Thanks to its factory design, fitment to the electrical installation, and integration with the controller network, it represents a functional and technically safe choice for fuel system repairs in modern Audi models.