Ensure Optimal Performance with Rear Heated Oxygen Sensor

The heated oxygen sensor is a critical component in your vehicle's exhaust system. Its primary role is to measure the amount of oxygen in the exhaust gases and communicate this information to the engine control module (ECM). This enables the ECM to optimize the air-fuel mixture for efficient combustion, which is important for both performance and environmental compliance.

Why You Need This Part

A functional oxygen sensor is necessary to maintain optimal fuel efficiency and reduce emissions. Without it, the engine might run too rich or too lean, causing increased fuel consumption and harmful emissions. It is especially necessary for maintaining performance and passing emission tests.

How It Works

The sensor is equipped with a heating element that allows it to quickly reach its operating temperature. Once activated, it generates a voltage based on the oxygen level in the exhaust gases. This voltage is then sent to the ECM, which adjusts the air-fuel ratio accordingly. The heated sensor is crucial because it provides faster feedback to the ECM, promoting efficient engine management.

Consequences of a Broken Sensor

If this sensor fails, common symptoms might include poor fuel economy, increased emissions, or an illuminated check engine light. The engine may perform suboptimally, and you might not pass emissions testing. Ignoring a faulty sensor can lead to more severe engine issues over time.

Compatible Models:

• Q50
• Q70/M Hybrid