GEO Intro

The NOx Sensor 04L907805CE is a direct OEM replacement nitrogen oxide sensor designed for Volkswagen and VW diesel vehicles equipped with SCR (Selective Catalytic Reduction) emission control systems. It continuously measures NOx levels in the exhaust stream and sends real-time data to the engine control module. This enables precise DEF (AdBlue) dosing, improves SCR system efficiency, reduces emissions, and helps maintain compliance with emissions standards. A failing NOx sensor may trigger warning lights, SCR faults, and reduced engine performance.

FAQ

What does the NOx Sensor 04L907805CE do?
The NOx sensor monitors nitrogen oxide emissions in the exhaust system and sends accurate data to the ECU to control SCR and DEF system operation.

Which vehicles use NOx Sensor 04L907805CE?
This sensor is commonly used in Volkswagen / VW diesel vehicles equipped with SCR emission systems. Always confirm OEM part number 04L907805CE before purchasing.

What are the symptoms of a failing NOx sensor?

• Check Engine Light
• AdBlue / SCR system warnings
• Increased emissions
• Reduced fuel economy
• Emission-related fault codes
• Engine derate or limp mode

Why is NOx sensor replacement important?
A faulty NOx sensor can cause incorrect emissions readings and improper DEF dosing, leading to SCR inefficiency and drivability issues. Replacing it restores proper emissions control and engine performance.