Audi Audi RS5 2010-2016 Emissions & Sensors Specifications

The 2010-2016 Audi RS5 is equipped with a combination of oxygen sensors (O2 sensors) and nitrogen oxide (NOx) sensors. The O2 sensors are located both upstream (pre-catalytic converter) and downstream (post-catalytic converter) to monitor exhaust gas oxygen levels. The NOx sensors are used to measure nitrogen oxide emissions, ensuring compliance with Euro 5 and Euro 6 emission standards.

The oxygen sensors in the Audi RS5 operate effectively within a temperature range of 250°C to 850°C. The NOx sensors have a slightly narrower range, typically functioning between 300°C and 800°C. These sensors are designed to withstand the high temperatures of the exhaust system while providing accurate readings.

Audi recommends inspecting the emissions sensors every 60,000 miles (96,000 km) and replacing them if they show signs of failure or degradation. Common symptoms of a failing sensor include reduced fuel efficiency, increased emissions, and the illumination of the Check Engine Light (CEL).

While aftermarket sensors may be available, Audi strongly recommends using genuine OEM sensors. Aftermarket sensors may not meet the precise specifications required for optimal performance and emissions compliance, potentially leading to inaccurate readings, increased emissions, and voiding of the vehicle's warranty.

The upstream oxygen sensors in the Audi RS5 typically produce a voltage output between 0.1V (lean mixture) and 0.9V (rich mixture). The downstream sensors, used for monitoring catalytic converter efficiency, have a more stable output, usually around 0.45V when the system is functioning correctly.