Fitment

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

Vehicle applications include:
Audi Q3 (8U)
Volkswagen Tiguan (MQB 2015–2018)
Volkswagen Sharan
Seat Alhambra (2015–2022)

Other VW Group diesel platforms using OEM part number 04L907805L / 5WK97233

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) dosing and reduce emissions.

Q2: Are 04L907805L and 5WK97233 the same part?

A2: Yes.

• 04L907805L = OEM VW Group part number
• 5WK97233 = Continental reference number
  They are 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, typically as an SCR inlet or outlet NOx sensor depending on vehicle configuration.

Q4: Which engines use this sensor?

A4: Mainly VW Group 1.6 TDI and 2.0 TDI Euro 6 diesel engines used across MQB platform vehicles.

Q5: What are common failure symptoms?

A5:

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