Fitment

Audi / Volkswagen / SEAT / Škoda diesel vehicles with SCR AdBlue Euro 6 emission system including

• Audi A3 8V 2.0 TDI diesel (selected SCR versions)
• Audi Q3 F3 2.0 TDI diesel
• Volkswagen Golf 7 1.6 / 2.0 TDI diesel
• Volkswagen Passat B8 2.0 TDI diesel
• Volkswagen Tiguan II 2.0 TDI diesel
• Škoda Octavia III 2.0 TDI diesel
• Škoda Superb III 2.0 TDI diesel
• SEAT Leon III 2.0 TDI diesel
• SEAT Ateca 2.0 TDI diesel

OE reference
04L907805ET
0281007571
0281007560
0281007571/560
04L907805DE (related variant family)

FAQ

What is this NOx sensor used for

It measures nitrogen oxide levels in diesel exhaust gas and sends data to ECU for SCR AdBlue emission control system

Is this inlet or outlet sensor

It is used in SCR system and can function as upstream or downstream NOx sensor depending on vehicle configuration

Are all 04L907805ET sensors interchangeable

No VAG NOx sensors are ECU coded and must match exact OE number and calibration version

What system does it work with

SCR Selective Catalytic Reduction system using AdBlue injection for Euro 6 diesel emission compliance

What are common failure symptoms

Engine warning light SCR AdBlue fault reduced power limp mode NOx sensor communication error emission efficiency faults