Audi A4 B9 2.0 TDI DTNA Adblue Injector Valve 04L131113J

The Audi A4 B9 2.0 TDI DTNA Adblue Injector Valve is a component of the diesel engine fuel system, responsible for the precise delivery of Adblue solution to the exhaust system. A properly functioning injector valve ensures stable operation of the nitrogen oxide reduction system and helps maintain vehicle compliance with emission standards.

Specifications and technical data

• SKU: 04L131113J
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L131113J
• Substitutable numbers: 04L131113J, 04L 131 113 J
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Function in the Adblue System

The Adblue injector valve in the Audi A4 B9 2.0 TDI DTNA works with the Selective Catalytic Reduction (SCR) system, dosing the appropriate amount of urea solution into the exhaust stream. This allows for effective reduction of NOx emissions, resulting in more environmentally friendly and stable engine operation.

This component operates under demanding temperature and pressure conditions, therefore its efficiency directly impacts:

• proper SCR system operation and the absence of Adblue-related errors in the engine control unit,
• maintaining power and torque without entering limp mode,
• compliance with emission standards for the specific model year of the Audi A4 B9.

Category: Audi Injector Nozzles

The presented component belongs to the Injector Nozzles category, which are precision components responsible for dosing the working medium – in this case, Adblue solution – in a diesel engine. A correctly selected injector nozzle for a specific Audi model guarantees proper interaction with the vehicle's electronics and exhaust system.

If you are looking for other elements in this group, check out the Audi injector nozzles available in our store to select a component tailored to your specific engine version and equipment.

Benefits of Using an Original Adblue Injector Valve

Choosing an original Adblue injector valve for the Audi A4 B9 2.0 TDI DTNA allows you to maintain the factory parameters of the exhaust gas treatment system. This solution is particularly important in modern diesel engines where the SCR system is an integral part of the engine control strategy.

• Stable Diesel Engine Operation – proper Adblue dosing reduces the risk of entering limp mode and performance loss.
• Exhaust System Protection – correct urea solution injection reduces the load on the SCR catalyst and other system components.
• Better Emission Control – an efficient valve helps maintain low nitrogen oxide levels, which is important during inspections and technical examinations.

Diagnostics and Operation of Diesel Engine Injection Systems

In case of problems with the Adblue system or diesel engine injection, it is worth paying attention to symptoms such as error messages, increased urea solution consumption, or power loss. Detailed information on typical symptoms and the consequences of neglect can be found in the article Diesel Injector Failures – How to Recognize Them and What Their Neglect Entails, which helps to better understand the operation of the fuel system in diesel engines.

Summary

The Audi A4 B9 2.0 TDI DTNA Adblue Injector Valve is a key component of the emission reduction system in diesel engines, responsible for the precise dosing of Adblue solution into the exhaust system. A properly selected and functional valve supports stable engine operation, reduces the risk of limp mode, and helps maintain vehicle compliance with applicable emission standards.