Dodge Durango Oxygen Sensors & Components

An oxygen sensor is a crucial part of the emissions control system on your Dodge Durango. By measuring the levels of unburned O2 that exits the engine and generating a voltage signal based on these measurements, it helps your vehicle's computer ensure an optimal air-fuel ratio, which is important for maintaining proper engine performance and reducing the amount of pollutants. Normal voltage is approximately 0.45V. If it goes above this value, this means the sensor has detected lower O2 content and hence the engine runs rich. If the sensor produces less than 0.45V, there is a higher concentration of oxygen in exhaust gases, which means the mixture is lean. Based on this feedback, the ECU increases or decreases the amount of fuel in the mixture.

The failure of the sensor triggers diagnostic trouble codes and causes the Check Engine light to come on. Because in this case the computer can't provide adequate adjustments to the air-fuel mixture, fuel efficiency may suffer and you may fail an emissions test. In our Dodge Durango oxygen sensors & components catalog, you'll find high-quality replacements manufactured to meet OE standards but offered at a lower price than dealer parts.