Fitment

Confirmed OE application based on OEM catalog listings:

• Volkswagen Touareg (7P) 3.0 TDI diesel engines
• SCR (AdBlue) emission systems
• Exhaust aftertreatment NOx monitoring system (pre/post SCR depending on configuration)

Fitment is strictly based on OE number matching: 059907807AF

Technical Description

This NOx sensor is used in diesel exhaust aftertreatment systems to measure nitrogen oxide (NOx) concentration in exhaust gases.

It provides real-time data to the engine control unit (ECU), enabling SCR (Selective Catalytic Reduction) dosing control for AdBlue systems and emissions compliance.

The sensor is part of the diesel emission monitoring system and communicates via the vehicle’s electronic control architecture.

Symptoms / Fault Codes

Common symptoms of failure include:

• Check engine light
• P2200 / P229F fault codes (system dependent)
• SCR / AdBlue system warning
• Reduced engine power (limp mode)
• Increased emissions

OE / Part Numbers

• 059907807AF

FAQ

What does this NOx sensor do?

It measures nitrogen oxide levels in diesel exhaust gases and sends signals to the ECU to regulate SCR emission control.

Is this sensor vehicle-specific?

Yes. Compatibility is strictly determined by OE number matching. This part is used in specific Volkswagen Touareg diesel applications.

Can similar NOx sensors be interchangeable?

Not recommended. Even small OE suffix differences usually indicate different calibration or system configuration.

What system is it used in?

It is used in SCR (AdBlue) diesel emission systems in Volkswagen Group vehicles.