Fitment

Confirmed OE application based on catalog cross-reference data:

• Audi Q5 (8R platform) 3.0 TDI (2013–2017 model range)
• SCR (AdBlue) diesel emission systems
• Front / upstream NOx sensor position (system dependent)

Fitment is strictly based on OE number matching: 8R0907807R

Technical Description

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

It sends real-time data to the ECU to control SCR (Selective Catalytic Reduction) dosing strategy, ensuring proper AdBlue injection and emissions compliance.

The sensor is part of the diesel emission monitoring system and communicates with the vehicle ECU to manage NOx reduction efficiency.

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

• 8R0907807R

FAQ

What does this NOx sensor do?

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

Is this sensor vehicle-specific?

Yes. It is strictly matched by OE number. Even small suffix differences usually indicate different calibration or system configuration.

Where is it used?

It is used in Audi Q5 (8R) diesel SCR emission systems within the 2013–2017 model range, depending on engine and exhaust configuration.

Can similar NOx sensors be interchangeable?

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