Fitment (Market-Validated Usage)

Based on OEM catalog cross-reference data and aftermarket listing aggregation, this NOx sensor is used in Volkswagen Group EA288 diesel SCR (AdBlue) systems on MQB platform vehicles.

Common system applications include:

• Volkswagen Golf VII 2.0 TDI (EA288 diesel)
• Volkswagen Passat B8 2.0 TDI (EA288 diesel)
• Volkswagen Tiguan 2.0 TDI (EA288 diesel)
• Škoda Octavia III / Superb III 2.0 TDI
• SEAT Leon / Ateca 2.0 TDI
• SCR (AdBlue) Euro 6 diesel emission systems

Fitment is strictly based on OE number matching: 04L907807AA

OE cross-reference sources confirm this part is shared across VW Group brands (VW / Audi / Škoda / SEAT / CUPRA) under the EA288 SCR system family.

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, which uses AdBlue (urea solution) to reduce NOx emissions and maintain Euro 6 compliance.

The sensor is an integrated electronic module designed for high-temperature exhaust environments with CAN communication to the engine control unit.

Symptoms / Fault Codes

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

OE / Part Numbers

• 04L907807AA
• 04L 907 807 AA (format variant)
• Related EA288 NOx sensor family: 04L907805 / 04L907807 series

FAQ

Is this sensor vehicle-specific?

Yes. NOx sensors must match the exact OE number. Even small suffix differences (AA / AS / BD / ED variants) can indicate different calibration or installation position (upstream/downstream).

Why do multiple VW Group brands appear in compatibility data?

Because Volkswagen Group (VW / Audi / Škoda / SEAT / CUPRA) shares the same EA288 diesel SCR architecture across multiple platforms.

Can similar OE numbers be used instead?

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