Fitment

Based on OE catalog and cross-reference data, 059907807AD is used in Volkswagen Group diesel SCR (AdBlue) systems, commonly on:

• Porsche Cayenne (92A) 3.0 V6 TDI diesel
• Volkswagen Touareg (7P platform) 3.0 V6 TDI diesel
• SCR (AdBlue) exhaust aftertreatment systems
• Post-catalyst / downstream NOx sensor applications depending on configuration

Fitment is strictly based on OE number matching: 059907807AD

Sources confirm shared application across VW, Audi, Škoda, SEAT, and Porsche diesel platforms in this OE family.

Technical Description

This NOx sensor measures nitrogen oxide (NOx) concentration in diesel exhaust gases and sends 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 a fully 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

• 059907807AD
• 059 907 807 AD (format variant)
• Compatible OE family: 059907807AB / 059907807L (revision-related variants in same system 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 Porsche Cayenne 92A and Volkswagen Touareg 7P diesel 3.0 V6 TDI applications depending on emissions configuration.

Is this sensor vehicle-specific?

Yes. It is strictly matched by OE number. Even small suffix differences (AD / AB / AF etc.) can indicate different ECU calibration or mounting position.

Can similar NOx sensors be used instead?

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