Fitment (Market-Validated Usage)

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

Common system applications include:

• Volkswagen Passat B8 2.0 TDI (EA288 diesel)
• Volkswagen Arteon 2.0 TDI (EA288 diesel)
• Škoda Superb III 2.0 TDI (EA288 diesel)
• SCR (AdBlue) Euro 6 diesel emission systems

Fitment is strictly based on OE number matching: 04L907805BH

OE catalog data confirms this part is widely used across VW Group EA288 SCR architecture with multiple brand compatibility under VW / Audi / Škoda / SEAT grouping.

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 injection to reduce NOx emissions and maintain Euro 6 compliance.

Designed for continuous high-temperature exhaust operation with integrated electronics and CAN communication.

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

• 04L907805BH
• 04L 907 805 BH (format variant)
• Related EA288 NOx sensor family: 04L907805 / 04L907807 series

FAQ

Is this sensor vehicle-specific?

Yes. It must match the exact OE number. Even small suffix differences (BH / BE / AS variants) can indicate different calibration, wiring length, or sensor position.

Why do multiple VW Group brands appear in fitment?

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

Can similar OE numbers be used instead?

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