Fitment

Compatible with Volkswagen Group Euro 6 diesel SCR (AdBlue) systems

Vehicle applications include:
Audi A3
Audi Q2
Seat Ateca
Seat Leon
Skoda Karoq
Skoda Octavia
Skoda Superb
Volkswagen Arteon
Volkswagen Golf
Volkswagen T-Roc

FAQ

Q1: What is this NOx sensor used for?

A1: It measures nitrogen oxide levels in diesel exhaust and sends data to the SCR system to control AdBlue (DEF) injection and reduce emissions.

Q2: Is 04L907807CE interchangeable with 5WK96737?

A2: Yes.

• 04L907807CE = OEM VW/Audi/Skoda/Seat number
• 5WK96737 = Continental aftermarket reference
  They are commonly used as equivalent SCR NOx sensors in VW Group 2.0 TDI engines.

Q3: Where is this sensor installed?

A3: It is installed in the exhaust aftertreatment system, typically after the diesel particulate filter (DPF) or SCR catalyst depending on vehicle design.

Q4: Which engines use this sensor?

A4: Mainly VW Group 1.6 TDI and 2.0 TDI Euro 6 diesel engines across MQB and MLB platforms.

Q5: What are common failure symptoms?

A5:

• Engine warning light
• AdBlue / SCR system fault
• NOx signal implausible error
• Limp mode (reduced power)