Fitment

Based on OEM catalog cross-reference data, 059907807AC is used in Volkswagen Group diesel SCR (AdBlue) emission systems, commonly on:

• Porsche Cayenne (92A) 3.0 V6 TDI diesel
• Volkswagen Touareg (7P) 3.0 V6 TDI diesel
• SCR (Selective Catalytic Reduction) diesel emission systems
• Euro 5 / Euro 6 V6 TDI exhaust aftertreatment platforms

Fitment is strictly based on OE number matching: 059907807AC

OE reference listings confirm this part is shared across VW / Audi / Porsche / Škoda / SEAT diesel SCR systems in the 059-series NOx sensor family.

Technical Description

This NOx sensor measures nitrogen oxide (NOx) concentration in diesel exhaust gases and transmits real-time data to the ECU.

It is part of the SCR (Selective Catalytic Reduction) system and controls AdBlue dosing strategy to reduce emissions and meet Euro diesel standards.

The sensor is an integrated electronic module designed for high-temperature exhaust environments and continuous emissions monitoring.

Symptoms / Fault Codes

Common symptoms of failure may include:

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

OE / Part Numbers

• 059907807AC
• Related OE family: 059907807AA / 059907807AD / 059907807J (revision-dependent variants in same platform family)

FAQ

What does this NOx sensor do?

It measures nitrogen oxide levels in diesel exhaust and sends data to the ECU for SCR emission control.

Which vehicles use this part?

It is commonly used in Volkswagen Touareg 7P and Porsche Cayenne 92A 3.0 TDI diesel applications, depending on emission system configuration.

Is this sensor vehicle-specific?

Yes. It is strictly matched by OE number. Even small suffix differences (AC / AD / AA etc.) indicate different calibration or system revision.

Can similar NOx sensors be used instead?

Not recommended. NOx sensors are ECU-calibrated components and must match exact OE specification.