FITMENT
Compatible with Volkswagen Group diesel vehicles equipped with SCR (Selective Catalytic Reduction) AdBlue emission systems requiring NOx monitoring.
Common applications include:

• VW Passat B8 (2.0 TDI SCR variants, 2014+)
• VW Passat Alltrack B8 (2.0 TDI SCR 4Motion CUAA engine)
• VW Arteon (2.0 TDI SCR variants 2017–2020+)
• Skoda Superb MK3 (2.0 TDI SCR variants)
• Related VW Group MQB platform diesel SCR systems
• Selected Euro 6 2.0 TDI SCR engine configurations

Using reference numbers:

• 03N907807A (OEM VAG part number)
• 04L907805G (OEM/VAG SCR system reference used in MQB platforms)
• 5WK96688 (Continental/VDO sensor cross-reference)

This NOx sensor is part of the SCR exhaust aftertreatment system and monitors nitrogen oxide (NOx) levels to control AdBlue/DEF dosing for emissions compliance.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide (NOx) levels in the exhaust system and sends real-time data to the ECU to regulate AdBlue injection and reduce emissions.

Q2: Where is it installed?
A2: It is installed in the SCR exhaust system, typically before or after the catalytic converter depending on vehicle configuration.

Q3: What are symptoms of failure?
A3: Check engine light, SCR/AdBlue warnings, NOx sensor fault codes, reduced engine power, or limp mode activation.

Q4: Are all listed part numbers interchangeable?
A4: 03N907807A, 04L907805G, and 5WK96688 are closely related SCR NOx sensor references, but exact compatibility depends on engine code and ECU software version.