Fitment

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

Vehicle applications include:
Volkswagen Golf
Volkswagen Passat
Audi A3
Volkswagen Arteon
Skoda Octavia
Seat Ateca
Audi Q2
Skoda Superb

FAQ

Q1: What is this NOx sensor used for?

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

Q2: Are 04L907807CF and 5WK96737 the same?

A2: Yes.

• 04L907807CF = OEM VW Group part number
• 5WK96737 = Continental aftermarket reference
  They refer to the same NOx sensor used in MQB diesel SCR systems.

Q3: Where is this sensor installed?

A3: It is installed in the exhaust aftertreatment system, usually after the DPF or SCR catalyst depending on configuration (upstream or downstream NOx sensor).

Q4: Which engines use this sensor?

A4: Mainly VW Group 1.6 TDI and 2.0 TDI Euro 6 engines across MQB platforms (Golf MK7, Passat B8, A3 8V, etc.).

Q5: What are common failure symptoms?

A5:

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