Fitment

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

Vehicle applications include:
Audi A6 Quattro 3.0 TDI (2014–2016)
Audi A7 Quattro 3.0 TDI (2014–2016)
Other VW Group 4G platform diesel vehicles using OEM 4G0907807C / 5WK97203

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) dosing and reduce emissions.

Q2: Are 4G0907807C and 5WK97203 the same part?

A2: Yes. 4G0907807C is the OEM Audi/VW number and 5WK97203 is the Continental aftermarket reference for the same NOx sensor family. (walmart.com, danawa.com)

Q3: Which vehicles use this sensor?

A3: It is mainly used on Audi A6 and A7 C7 3.0 TDI Quattro diesel models (2014–2016) with SCR/AdBlue systems.

Q4: Where is this sensor installed?

A4: It is installed in the exhaust aftertreatment system, typically as an upstream or downstream SCR NOx sensor depending on configuration.

Q5: What are common failure symptoms?

A5:

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