Bad Oxygen (O2) Sensor Symptoms
Owning a car is great; everyone knows that. A car represents a kind of responsibility to its owner. In order to keep your car in good condition, you have to maintain it properly. What does that actually mean?
Car maintenance is a broad topic. For example, obvious things include cleaning your car as well as checking your oil.
What is an Oxygen Sensor
First things first; for those who aren’t really sure what an oxygen sensor is, let’s briefly explain its purpose. There is an oxygen sensor tip located on the inside of your exhaust pipe; the oxygen sensor observes the percentage of oxygen in the exhaust.
So, there are two potentially problematic cases here:
There is too little oxygen (the mixture is too rich)
There is too much oxygen (the mixture is too lean)
Neither of these scenarios is quite good; in either case, the oxygen sensor will send a signal to the Engine Control Unit (ECU) with the message to adjust the amount of fuel that is entering your engine.
So, why is it important to have a correctly working oxygen sensor? Because the wrong mixture of oxygen and gasoline can increase pollutants exiting your exhaust and harm the environment. Moreover, your catalytic converter might end up being damaged, which would result in additional repairs and costs.
Signs of a Failing O2 Sensor
Most drivers easily notice when something changes in the way their car performs; especially those who drive every day. That is a good thing, naturally; noticing a problem from the get-go makes it easier to solve.
Here is the list of typical bad oxygen sensor symptoms that might point to a failing O2 sensor. If you notice any of these while driving your car, it would be advisable to check if your oxygen sensor is functioning properly.
1. Check Engine Light
2. Your Engine Sounds Rough
If you have noticed that your vehicle is running irregularly or that the engine sounds rough, there might be a problem with your oxygen sensor. When the mixture in your car (oxygen and fuel) is too lean or too rich, the engine becomes less efficient.
A bad sensor could easily disrupt some engine functions such as engine timing, the air to fuel ratio, and combustion intervals. That is what causes your engine to sound rough or perform unpredictably.
3. Bad Gas Mileage
4. Emission Test Failure
When to Replace Your Oxygen Sensor
If your car is no more than 15 years old, consider replacing your sensor every 60,000 to 90,000 miles. All oxygen sensors fail over time; they take a lot of wear and tear. Bear in mind that you will benefit a lot from replacing your sensor. Your car will become more eco-friendly, as it will reduce the emission of pollutants in the atmosphere. In addition, your engine will run smoothly.
So, as soon as you see the “check your engine” light, or notice irregular engine idle, poor gas mileage, or smell rotten eggs, give your mechanic a call. It is vital that you don’t ignore bad oxygen sensor symptoms and react as soon as you notice the usual warning signs.
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