What Does An Oxygen Sensor Do To Your Car?


The last thing a car wants to see is the check engine light on in bright orange color.

Did you know that at times the sensor can also indicate the tripped oxygen? Also, it can be a warning sign there is a malfunction in the heater circuit.

The best bet is to take your vehicle for auto repair in Holland to tune it and ensure the O2 sensor's top performance.

What Are The Other Indications Of Check Engine Light?

Sometimes when you see heater circuit malfunction or check engine light messages, it can suggest that the O2 sensor has gone bad. 

It can further indicate your vehicle is not running properly and may result in excessive heat emissions.

What Is Exactly An Oxygen Sensor?

Dr. Gunter Bauman developed an oxygen sensor (also referred to as a lambda sensor) in the late 1960s for Robert Bosch GmbH.

It is an electric device to measure oxygen's proportional amount in gas or liquid. It is composed of platinum and ceramic coated zirconia.

The creation of planar oxygen sensors to make an O2 sensor with the ability of mass production.

NTK developed the modern O2 sensor for use in Accord and Honda Civic.

It is made by using High-Temperature Cofired Ceramic (HTCC) green tape layers. The sensor's current state was made more effective than the original sensor's style.

What's The Use Of An Oxygen Sensor In Your Car?

You can find the feature of an oxygen sensor in all the cars manufactured before 1980. It is placed within the emissions control system.
The functionality of the oxygen sensor sends data to the management computer in the engine. A properly functioning oxygen sensor engine is running at its best.

Moreover, the sensor's missions are in check, and there are excessive emissions.

Many states keep a check for vehicle inspection programs to regulate emissions. Check engine light and oxygen light alerts these officials of any excessive emissions.

The outcome is that you may not pass the inspection if one or more O2 sensors are faulty.

Why Does Your Car Jerk When Shifting Gears?

How Many O2 Sensors Are In Your Car?

There is at least one sensor in the catalytic converter of a car. There is one of each in the car's exhaust manifold.

The number of oxygen sensors for a vehicle depends on the model, make, year, and engine.

Although, many later car models have about four O2 sensors.

Below are the particular vehicles that have four O2 sensors:

  • 2000 Toyota Land Cruiser 4.7L 8 cylinder
  • 2010 Chevrolet Tahoe 6.0 L 8 cylinder
  • 2013 Honda Civic 1.8L 4 cylinder
  • 2004 Jeep Wrangler 4.0L 6 cylinder

The actual number of sensors differs as per the engine type present in that vehicle:

  • There are three O2 sensors in the traditional V8 and V6, including the right and left bank sensor upstream and downstream oxygen sensors.
  • There are four O2 sensors in a V8 and V6 transverse, including front or left bank upstream, engine rear, rear bank upstream, and downstream sensor.
  • 4 and 6 cylinders have three O2 sensors, including rear and front bank upstream and downstream sensors.
  • There are downstream and upstream oxygen sensors in 4 cylinders transverse.

How Does An Oxygen Sensor Work?

Oxygen is present when a gasoline-powered engine burns gasoline.
Several factors affect the presence of oxygen in an engine. These factors are engine load & temperature, altitude, barometric pressure, and air temperature.

The standard ratio for gasoline and oxygen is 1:14.7. It can slightly differ as it depends on the different types of gas.

If there is less O2, it will remain even after combustion. This also refers to a rich mixture.

However, more oxygen is present, also referred to as a lean mixture.

In case you are wondering which one is better for the environment? The answer is none of them.

If there is a rich mixture, it will create pollution.

In the case of a lean mixture, it will produce nitrogen oxide pollutants leading to engine damage and the vehicle's low performance.

Oxygen sensors are located near the exhaust system to ascertain if it is a lean or rich mixture in your car.

Generally, an oxygen sensor creates a voltage because of a chemical reaction that may result in an imbalance of oxygen to gasoline ratio.

Many car engines determine the amount of fuel expense to the engine based on the oxygen sensor voltage. The engine management computer will not ascertain the ideal air to fuel ratio if the O2 sensors fail to function.

The end outcome is the engine is forced to estimate the use of gasoline, which will mostly result in a polluted engine and a poorly functioning car.

How Can You Test An Oxygen Sensor?

You can take off the oxygen sensor or leave it attached to test it.

You will require two tools to test it, which are the back probe and high-impedance digital voltmeter.

A professional mechanic at A&G customs has these specialized and necessary tools to check the oxygen sensors.

The first step is to check the location of O2 sensors and the surrounding wires to make sure it is intact. Through the step, you can also make sure without any signs of wear and tear.

The next step is to start your vehicle and allow it to run until the engine reaches a temperature of 600 degrees Fahrenheit to make sure you get an accurate reading from the sensor.

The oxygen sensors measure a particular number of points and conditions ascertain any faulty measurement using the black probe and voltmeter.


You require specialized tools and training to conduct the test open oxygen sensor. 

It is best if you allow a mechanic to handle this voltage-based testing. 

Schedule an oxygen sensor testing with A&G Customs. 

Bring your car to us for any auto repair in Holland, where you can let our expert professionals handle the explicit work of oxygen sensor testing or repair. 

We cater to a range of services like inspections, towing, general repairs, restorations, auto bodywork, and custom paint.

Connect with us today at 215 669 3072.