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

• Volkswagen Touareg (7L / early 7P 3.0 TDI diesel SCR variants 2009–2012)
• Audi Q7 (4L 3.0 TDI diesel SCR variants 2010–2015)
• Selected VW/Audi/Porche shared 3.0 TDI V6 diesel platforms
• Euro 5 / early Euro 6 SCR systems depending on engine calibration

Using reference numbers:

• 059907807E (OEM VAG part number)
• 5WK96687 (Continental/VDO sensor cross-reference)
• Common SCR NOx sensor family used across VW Group diesel systems

This sensor is part of the SCR exhaust aftertreatment system and monitors nitrogen oxide (NOx) levels to regulate AdBlue dosing.

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

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

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

Q4: Is 059907807E interchangeable with 5WK96687?
A4: Yes, 059907807E is the OEM VW/Audi reference and 5WK96687 is the supplier cross-reference for the same NOx sensor unit.