Fitment

Based on OEM cross-reference data, 04L907805AJ / 5WK97435A is used in Volkswagen Group diesel SCR (AdBlue) systems on EA288 / MQB diesel platforms.

Common applications include:

• Volkswagen Caddy (MK4 facelift) 2.0 TDI
• Volkswagen Crafter (selected SY/SZ platform variants)
• MAN TGE 2.0 TDI diesel
• SCR (AdBlue) emissions systems with EA288-based exhaust architecture

Fitment is strictly based on OE number matching: 04L907805AJ / 5WK97435A

OE cross-reference listings confirm this sensor family is shared across VW commercial vehicles and light-duty diesel platforms using EA288 SCR systems.

Technical Description

This NOx sensor measures nitrogen oxide (NOx) concentration in diesel exhaust gases and transmits 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 6 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
• P2200 / P229F fault codes (system dependent)
• SCR / AdBlue system warning
• Reduced engine performance (limp mode)
• Increased emissions

OE / Part Numbers

• 04L907805AJ
• 5WK97435A
• Continental / Vitesco reference: A2C38992600

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 Volkswagen Caddy, Crafter, and MAN TGE diesel applications depending on engine and emission system configuration.

Is this sensor vehicle-specific?

Yes. Compatibility is strictly determined by OE number matching. Even small suffix differences (AJ / AT / FB etc.) indicate different calibration or hardware revisions.

Can similar NOx sensors be used instead?

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