Fitment

Based on OE catalog cross-reference data, 8R0907807M / 5WK97256 is used in Volkswagen Group diesel SCR (AdBlue) systems on EA897 V6 TDI platforms.

Common applications include:

• Porsche Cayenne (92A) 3.0 V6 TDI diesel
• Audi Q5 (8R) 3.0 TDI / SQ5 diesel
• Volkswagen Touareg (7P) 3.0 V6 TDI diesel
• SCR (AdBlue) diesel emission systems (Euro 5 / Euro 6 depending on version)

Fitment is strictly based on OE number matching: 8R0907807M / 5WK97256

OE cross-reference confirms this sensor is shared across VAG V6 TDI platforms, especially Audi Q5/SQ5 8R generation.

Technical Description

This NOx sensor measures nitrogen oxide 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 maintain compliance 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
• SCR / AdBlue system warning
• P2200 / P229F fault codes (system dependent)
• Reduced engine performance (limp mode)
• Increased emissions

OE / Part Numbers

• 8R0907807M
• 5WK97256
• 8R0 907 807 M (format variant)

FAQ

Why does this listing include Porsche, Audi, and Volkswagen?

Because this is a shared Volkswagen Group (VAG) platform part used across multiple brands on the same EA897 V6 TDI diesel architecture.

Is this sensor interchangeable between brands?

It depends on OE matching. Even if vehicles share platforms, the sensor must match the exact OE number and revision.

Which vehicle uses it most commonly?

Audi Q5 / SQ5 8R 3.0 TDI is one of the most common applications for this OE reference.