FITMENT
Compatible with Volkswagen diesel vehicles equipped with SCR (Selective Catalytic Reduction) exhaust systems requiring NOx monitoring sensor units.
Common applications include diesel passenger vehicles and light commercial vehicles using reference SNS472 / 04L907805AS.

FAQ
Q1: What is the purpose of this NOx sensor?
A1: It measures nitrogen oxide concentration in exhaust gases and sends signals to the engine control system for emissions regulation.

Q2: Where is this sensor located?
A2: It is installed in the exhaust system, typically upstream or downstream of the SCR catalyst depending on vehicle configuration.

Q3: What are signs of a faulty NOx sensor?
A3: Engine warning light, emissions-related fault codes, and incorrect SCR system operation.

Q4: Can this sensor be used on all Volkswagen diesel engines?
A4: No, compatibility depends on the specific engine type and emissions system setup.