How do I replace downstream O2 oxygen sensors for SRX 2010-2014 models?

The upstream and downstream O2 oxygen sensor is an important part of the vehicle exhaust system. It measures the amount of oxygen in the exhaust gas and sends this information to the engine control module, or ECM. ECM uses this data to adjust the air-fuel ratio of the engine to ensure optimal performance and fuel efficiency. However, over time, both upstream and downstream O2 oxygen sensors have the potential to wear out or break down, leading to reduced performance and increased emissions. In this article, we will discuss how to replace the upstream and downstream O2 oxygen sensors in SRX 2010-2014.

Summary of SRX 2010-2014

The SRX is a mid-size luxury crossover SUV produced by Cadillac between 2004 and 2016. The SRX produced between 2010 and 2014 is the second generation model, equipped with many advanced technologies and features. The car has a variety of engine options, including a 3.0-litre V6, a 2.8-litre V6 turbo, and a 3.6-litre V6. In addition, it is equipped with a six-speed automatic transmission as well as an all-wheel drive system.

Replace the upstream and downstream O2 oxygen sensors

The replacement of upstream and downstream O2 oxygen sensors in SRX 2010-2014 is a relatively simple process that can even be done using basic tools. Here are the steps to accomplish this task:

Locate the downstream O2 oxygen sensor: The sensor is located on the exhaust pipe, near the engine.

Remove the electrical connector from the sensor: Use a flat-head screwdriver to loosen the latch and gently remove the connector from the sensor.

Remove the old sensor: Use the oxygen sensor socket or wrench to remove the sensor from the exhaust pipe, taking care not to damage the threads on the exhaust pipe.

Install the new sensor: Apply anti-stuck mixture to the thread of the new sensor, and carefully insert its thread into the exhaust pipe. Use a torque wrench to tighten the sensor as specified by the manufacturer.

Reconnect electrical connector: Make sure the new sensor electrical connector is securely connected and locked.

Clear error codes: Use the OBD-II scanner to clear any error codes that may have been triggered by the old sensor.

For the upstream and downstream O2 oxygen sensors of SRX 2010-2014, the above steps need to be repeated. It is recommended to replace all sensors at once, as they tend to wear out at the same time.


The upstream and downstream O2 oxygen sensors are essential for the SRX 2010-2014 exhaust system. By following these simple steps, you can replace old or damaged sensors, restore vehicle performance and improve fuel efficiency. Remember to always use high quality replacement parts and follow all safety precautions.

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