Posted on 8/30/2022
An oxygen sensor is a key part of a vehicle's emissions control system. It monitors the amount of oxygen in the exhaust gases and adjusts the fuel mixture to ensure the engine is running at peak efficiency. Over time, the sensor can become fouled by deposits and start sending false signals to the powertrain control module (PCM). When this starts happening, the oxygen sensor might need to be replaced. If your car's oxygen sensor is bad, there are a few symptoms you may notice. Keep an eye out for the following symptoms that may signal a bad oxygen sensor. If you notice any of them, it's important to have your car's oxygen sensor checked by a mechanic to ensure that it is functioning properly. Symptoms of a Bad Oxygen Sensor Decreased Engine Efficiency and Fuel Economy A bad oxygen sensor can cause decreased engine efficiency and bad fuel economy. The oxygen sensor is responsible for monitoring the air-fuel mixture in the engine. If the sensor is not working properly ... read more