Audi Audi S3 2013-present Emissions & Sensors Specifications

The emissions sensors in the 2013-Present Audi S3 include oxygen sensors, NOx sensors, and exhaust gas temperature sensors. These sensors are designed to meet Euro 5 and Euro 6 emissions standards. The oxygen sensors are lambda probes that monitor the air-fuel mixture, while the NOx sensors measure nitrogen oxide emissions. Compatibility is ensured with the EA888 engine family and the respective model years. Always use genuine Audi or OEM-grade replacements for optimal performance.

Regular maintenance for emissions sensors includes visual inspections for damage or contamination, cleaning or replacing the sensors as needed, and ensuring proper connections. The oxygen sensors should be replaced every 60,000 to 100,000 miles, while NOx sensors may need replacement every 80,000 to 120,000 miles. Follow the recommended service intervals in the Audi maintenance schedule and use only approved cleaning products to avoid damaging the sensors.

To replace emissions sensors, start by disconnecting the battery and locating the sensors in the exhaust system. Use a wrench to remove the old sensor, taking care not to damage the threads. Install the new sensor by hand-tightening it first, then tightening it with the appropriate tool. Reconnect the electrical connector and ensure all connections are secure. For NOx sensors, additional calibration may be required using an Audi-specific scan tool. Always follow proper safety procedures when working with exhaust systems.

Common issues with emissions sensors include faulty readings, contamination, or electrical connector problems. Use an OBD-II scanner to check for trouble codes related to emissions sensors. Inspect the sensors for soot buildup or physical damage. Clean or replace the sensors as needed, and ensure all electrical connections are secure. If issues persist, consult a professional mechanic or Audi specialist for further diagnosis and repair.

To optimize performance, ensure the emissions sensors are clean and free from contamination. Use high-quality fuel that meets Audi's specifications to maintain proper engine operation. Avoid aggressive driving patterns that can lead to excessive soot buildup. Regularly service the exhaust system and catalytic converter to prevent downstream contamination of the sensors. Use Audi-approved diagnostic tools to monitor sensor performance and address any issues promptly.