Oxygen Sensor Function
Functioning like a monitor, your oxygen sensor works like this: the O2 sensor tip is located inside of your exhaust pipe. The oxygen sensor detects the percentage of oxygen in the exhaust.
If the mixture is too rich (too little oxygen) or too lean (too much oxygen) then the oxygen sensor sends a signal to the ECU telling it to adjust the amount of fuel entering your engine accordingly.
The wrong mix of gasoline and oxygen can increase pollutants that exit your vehicle’s exhaust, thereby harming the environment, as well as potentially causing your catalytic converter to fail or even damage your engine.
So, a properly working oxygen sensor is a necessity for any vehicle. Neglecting to replace a bad oxygen sensor will usually result in damage to your catalytic converter.
If you have a bad oxygen sensor it will turn on your check engine light. Val & Mike’s Auto Repair is your check engine light and smog repair specialist. If you have questions about your O2 sensor then give us a call at 714-375-3145.