FITMENT
Compatible with Audi diesel vehicles equipped with SCR (Selective Catalytic Reduction) systems requiring NOx sensor monitoring.
Common applications include Audi diesel passenger vehicles using reference SNS484 / 8K0907807Q.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide levels in the exhaust system and sends data to the engine control unit for emissions control.

Q2: Where is this sensor installed?
A2: It is installed in the exhaust system, typically before or after 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 reduced SCR system efficiency.

Q4: Is this compatible with all Audi diesel models?
A4: No, compatibility depends on the exact engine and emissions system setup.