
How much does it cost for O2 sensor? A brand new replacement oxygen sensor
Oxygen sensor
An oxygen sensor (or lambda sensor) is an electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analysed. It was developed by the Robert Bosch GmbH company during the late 1960s under the supervision of Dr. Günter Bauman.
How much should it cost to replace an O2 sensor?
Thereof, how much should it cost to replace an o2 sensor? If you decide to do the repairs, the cost to replace the oxygen sensor yourself can be between $20-$94, depending on the brand and type of sensor you buy. To have the repairs done by a mechanic the price can be anywhere between $113 to $478 for parts and labor.
How much is it to install an O2 sensor?
Reducing O2 Sensor Cost: Doing It Yourself
- Choosing An OBD Scanner. First, you’ll need to get a hold of an OBD scanner. ...
- Scanning The OBD System. Plug the reader into the car’s OBD port. This port is often located underneath the dashboard area, either above the pedals or your knee.
- Possible O2 Sensor Error Codes. There are literally hundreds of error codes that your OBD system can register. ...
How often should O2 sensors be replaced?
This will reduce pollution and keep your car engine running efficiently. If your car is older than 15 years, it is best to replace the O2 sensors every 50,000 to 65,000 miles. How to Replace the O2 Sensor?
Which O2 sensor to replace first?
First check for exhaust leaks - that’s a common cause for an O2 sensor related codes. If that’s not it, follow the other guys’ advice and replace the appropriate O2 sensor (likely the post CAT sensor) first and see if that fixes the problem. If it doesn’t, move on to the cat. My money is on the O2 sensor or exhaust leak.

Are O2 sensors expensive to replace?
A brand new replacement oxygen sensor can cost you from $20 to $100, depending on the make and year of your car. Taking your car to a mechanic to fix the issue can cost up to $200. Though, this depends on the type of car and the rates of the mechanic.
Can I drive with a failing O2 sensor?
In summary, yes, you can drive with a faulty O2 sensor. But you'll want to change it immediately, because otherwise, you'll be spending more money on fuel whether during the daily commute or an out-of-town leisure trip, and you risk having to spend more on a new catalytic converter as well.
What causes the O2 sensor to go bad?
Over time, your oxygen sensors can become caked with byproducts of combustion like sulfur, lead, fuel additives, and oil ash. This keeps your sensors from sending signals to your engine's computer. Using fuel that isn't recommended for your vehicle or low-quality gasoline can make your oxygen sensors fail faster.
Is a bad O2 sensor a big deal?
A bad oxygen sensor could cause sluggish and rough driving with stalls, along with poor fuel efficiency and high pollution. And if you leave it there for several months, it may lead to serious problems in the engine and catalytic converter which cost thousands of dollars to fix or replace.
Will check engine light reset after replacing O2 sensor?
Hi There, The last diagnosis is correct in that the sensor replaced caused the check engine light to turn off. In some cases they do not always turn off immediately and take a bit of driving for the computer to recalibrate and recognize that the problem has been corrected.
How long does it take to replace an O2 sensor?
Most of the time, it will only take a skilled mechanic about 30 minutes to replace an O2 sensor. In some cases, however, it can take up to an hour or more. On average, replacing an O2 sensor should take 20-40 minutes with a median time of 30 minutes.
How do you fix a broken O2 sensor?
Typically, you cannot repair a faulty O2 sensor. It must be replaced because of the technology and materials in its housing. There are some DIY places that will tell you how to clean the sensor to get a few more miles out of it, but you're only delaying the inevitable.
Can you clean an O2 sensor?
There are no true oxygen sensor cleaners that are safe to put through your engine. While some people choose to remove them and use a wire brush or an aerosol cleaner to remove deposits, we do not recommend trying to clean O2 sensors.
How much does an O2 sensor cost?
Compare your quote to other individuals from around the country to make sure you are getting the best deal. The average for O2 Sensor is $291
How much does it cost to replace an oxygen sensor?
If you decide to do the repairs, the cost to replace the oxygen sensor yourself can be between $20-$94, depending on the brand and type of sensor you buy.
When Should You Have The O2 Sensor Repaired?
The first and most obvious sign will be that the ‘check engine’ light will come on, and your mechanic should be able to confirm that it’s emitting an O2 sensor code. If the garage confirms that the sensor is damaged it will need to be replaced.
What to do if car has more than one O2 sensor?
If a car has more than one O2 sensor then the scan should indicate which one is causing the issue. Once the problematic sensor has been identified by the engine computer, the mechanic will use an oxygen sensor socket to loosen and remove the device.
What tool do you use to check engine light?
When you take your car to the mechanic they’ll usually run a few diagnostic tests to confirm the issue. They’ll use an OBD2 diganostic tool to confirm that the check engine light is sending out the code for the oxygen sensor.
Why is oxygen sensor important?
The oxygen sensor was developed to help combat this issue and prevent excess pollution or damage to the engine. It’s typically placed in the exhaust pipe and it works to detect lean and rich mixtures, and works with the engine’s computer to help adjust the amount of fuel entering the engine.
What is an O2 sensor?
The O2 sensor (also known as the oxygen sensor) is one of the key components in helping your car run efficiently. A faulty sensor can cause poor fuel consumption and can potentially cause serious damage to the engine, so the O2 sensor replacement cost can be far less than the additional fuel or the cost of major engine repairs.
How much does it cost to replace O2 sensor?
This price, of course, varies from vehicle to vehicle. Many sensors, nonetheless, cost between $20 and $100. Your mechanic’s labor costs also likely vary based on a few factors, including how difficult it is to access your sensors. Typically, labor costs for a sensor replacement are around $150.
What happens if you have a bad O2 sensor?
After all, if you have a bad or failing O2 sensor, you could get reduced gas mileage or even fail an emissions inspection. If you have noticed some bad O2 sensor symptoms and are ready to replace your sensors, AutoZone has everything you need to do the job right.
How to tell if O2 sensor is bad?
An oxygen sensor does not have to fail completely to give you problems. On the contrary, even a failing O2 sensor (sometimes called a “lazy” O2 sensor) may cause your car to have a few issues. If you notice any of the following signs, you may have a bad O2 sensor or one that is about to go bad: 1 An illuminated check-engine light 2 A rough engine idle 3 A misfiring engine 4 Worsening fuel economy 5 Failed emissions inspection
What happens when O2 sensor is not working?
This voltage sends information to the vehicle’s electronic control module. Thus, if the sensor is not working properly, the computer must guess the amount of fuel that is necessary.
What is the purpose of oxygen sensors?
Most vehicles on the road today have internal combustion engines. To generate the power necessary to move the vehicle, the engine burns a precise mixture of fuel and air. This process, of course, creates certain emissions.
How many O2 sensors are there in 1980?
Both to improve engine efficiency and minimize emissions, vehicles manufactured after 1980 have at least one O2 sensor. With few exceptions, automotive internal-combustion engines require a oxygen-to-gasoline ratio of 14.7:1. If there is not enough oxygen in the mixture, excess fuel sticks around after combustion.
Can an O2 sensor go bad?
An oxygen sensor does not have to fail completely to give you problems. On the contrary, even a failing O2 sensor (sometimes called a “lazy” O2 sensor) may cause your car to have a few issues. If you notice any of the following signs, you may have a bad O2 sensor or one that is about to go bad: An illuminated check-engine light.
How much does it cost to replace an O2 sensor?
Oxygen Sensor Labor and Part Costs Depending on your car, the oxygen sensor cost may vary from $20 to $100. The labor cost depends on your vehicle model and the mechanic to whom you go. A Mechanic’s labor rates range from $50-$150 an hour. Usually it will not take them more than 30 minutes and will cost you less.
What happens when the O2 sensor goes bad?
If your vehicle has a bad oxygen sensor, it could run irregularly or sound rough when it idles. A faulty oxygen sensor can impact your engine’s timing, combustion intervals, and other essential functions. You could also notice stalling or slow acceleration.
Are O2 sensors worth replacing?
The oxygen sensor of your car was not designed to work forever, and it needs to be replaced at some point during the life of your engine. Newer oxygen sensors are supposed to work efficiently for 60,000 to 90,000 miles, depending on the model of your car.
Does Jiffy Lube replace oxygen sensors?
Type of Repair: Cost: Frequency: Replace Oxygen Sensor $259.30 7.10%.
Can I replace oxygen sensor myself?
In most vehicles, replacing an oxygen sensor is a simple procedure that requires only a few tools. However, if this is not a task you are comfortable doing on your own, this is something that any professional technician, such as one from YourMechanic, can take care of quickly and easily.
Why is my check engine light still on after changing O2 sensor?
The check engine light could be caused by more than one problem. Your oxygen sensor may have been replaced by the technician, but your spark plugs need to be replaced as well.
Should you replace both O2 sensors at the same time?
Logically, they will wear at the same rate so the rear will need to be replaced soon after the front and vice versa. My original O2 sensors were replaced about 2 months ago; 177k miles and started throwing an O2 sensor code around 170k miles.
How much does it cost to replace an oxygen sensor?
AutoServiceCosts says oxygen sensor replacement costs about $296 with average prices ranging from $113 to $478 to have a professional mechanic replace your O2 sensors. Their guide states that you can save money by replacing your oxygen sensors yourself and only spend around $20 to $94.
How Can I Save Money on an Oxygen Sensor?
Don’t make the error of purchasing a replacement oxygen sensor from a mechanic or auto parts retailer. Find out the precise manufacturer part number for your vehicle, and then do a search online to find a much better price.
What is an Oxygen Sensor?
An oxygen sensor, commonly called an O2 sensor, is an instrument mounted in the vehicles exhaust system that continually oversees the oxygen content in the gases that leave the engine.
What are the Signs Related to a Faulty Oxygen Sensor?
Signs can include misfiring or hesitation from the engine, decreased fuel mileage, idling roughly or possibly stalling. A vehicle that fails an emissions test could be caused by a faulty oxygen sensor.
How Often are Oxygen Sensors Required to be Replaced?
On vehicles made since 1996, their oxygen sensors can go up to 100,000 miles or more prior to needing it to be replaced. That mileage will decrease on vehicles that are older.
Why does my oxygen sensor fail?
Oxygen sensors will fail if they’re polluted with coolant, oil, silicone or other substances. When fluid pollution has caused an oxygen sensor to fail, the leak has to be fixed or the new sensor could also be damaged.
Can I Replace the Oxygen Sensor Myself?
If you feel you’re comfortable replacing it, you should try to replace the oxygen sensor yourself, because it’s a pretty simple job, it can save you 100’s of dollars.
How often do oxygen sensors need to be replaced?
On cars manufactured since 1996, oxygen sensors can go 100,000 or more before needing to be replaced. That mileage decreases on older cars.
What is an oxygen sensor?
The oxygen sensor, sometimes called an O2 sensor, is a device mounted in the exhaust system that constantly monitors the oxygen content in the gases that exit the engine.
What are the symptoms related to a bad oxygen sensor?
Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.
How does an oxygen sensor work?
How does the oxygen sensor work? The information from the oxygen sensor is used by the engine's computer to help determine how much fuel is needed so that the engine will run efficiently. The sensor sends this information by producing voltage when the sensor is heated. The voltage rises and falls as oxygen levels in the exhaust rise and fall.
Can I drive with a oxygen sensor problem?
A vehicle that has a bad oxygen sensor can be driven safely until the sensor can be replaced. But the car will not run as well until the repair is made.
How important is replacing the oxygen sensor?
The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.
Why are oxygen sensors damaged?
Many oxygen sensors are damaged by leaking oil or coolant. If that is the case, the cause of that leak needs to be identified and repaired, or else the replacement oxygen sensor will be damaged as well. New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.
What does the front sensor do in a catalytic converter?
The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter.
What happens if you drive a car with a faulty oxygen sensor?
If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter. Oxygen Sensor-MATROX-1.
Why do cars need oxygen sensors?
Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.
Where is the rear sensor located?
Rear (downstream) sensors are located behind the catalytic converter . The purpose of the rear oxygen sensor (s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor.
What to do if your check engine light is flashing?
If check engine light is flashing, pull over and get the car towed to avoid costly repairs. Ask the mechanic to inspect the vacuum hoses and leaks in the exhaust system. If the vacuum hose or exhaust system is leaking, it will display an oxygen sensor fault code. Replacing an oxygen sensor may not fix the problem.
Where is the O2 sensor located?
Some vehicles have more than one O2 sensor, but they are all located somewhere in the exhaust system and operate on the same principle: The sensor measures the difference in oxygen levels between outside air and what is present in the exhaust gas, and sends a variable voltage signal to the engine’s central computer.
How long do oxygen sensors last?
A common cause of the dreaded check engine light, failed oxygen sensors have a life expectancy of anywhere from 35,000 to 50,000 miles. It’s a unique sensor with impressive technology for something the size of a spark plug — it’s the only sensor that generates its own voltage using a heat-induced chemical reaction.
What happens if oxygen sensor is not working?
Trouble in the Air. A sluggish or inoperative oxygen sensor can cause a rise in unhealthy emissions and create poor fuel economy. If the engine doesn’t have the proper real-time data from the sensor, it might default to a predetermined air-fuel mixture with no regard for how the vehicle is actually being driven.
How to replace a bad spark plug sensor?
Once you’ve narrowed it down to a bad sensor, it’s as simple as changing a spark plug — just unscrew, unplug and replace, taking care not to put any grease on the new sensor , as it will affect a proper reading.
Is oxygen sensor good for driving?
Oxygen Sensor Repair: What All Drivers Should Know. There are a number of sensors that keep your vehicle driving safely and at peak performance, but the oxygen sensor in particular affects not only your car’s drivability but the outside world as well. With its direct impact on emissions, a properly functioning O2 sensor isn’t just good ...
Is an O2 sensor good for your engine?
With its direct impact on emissions, a properly functioning O2 sensor isn’t just good for your engine, it’s good for all of us. So what to do when you suspect a problem? Take a minute to educate yourself on oxygen sensor repair and avoid paying for it later — in more ways than one.
Can you replace an oxygen sensor?
The good news is that oxygen sensors are relatively easy to diagnose and repair, though repair may be too strong a word. Due to the technology and materials contained in the sensor itself, your best bet is to replace a faulty sensor. You may have noticed some signs of failure listed above, or you might have a sudden check engine light to contend with. Running a quick scan through the OBD II port will reveal whether you have a faulty sensor. Don’t have a scanner? Most shops and auto parts stores will run a diagnostic scan for free.
How much does it cost to replace an oxygen sensor?
It is relatively cheap to fix this issue. The cost of an oxygen sensor ranges from $50 to $250, depending on the brand and the required work. This small problem can lead to more serious damage to your car engine. So, you need to replace the faulty oxygen sensor as soon as you can.
What happens if your car has a bad oxygen sensor?
If your car has a bad oxygen sensor, the “Check Engine” light on your dashboard will begin to glare at you. It’s a mystery device for most drivers, but it shouldn’t be for you. In this article, I will show you how to fix a bad O2 sensor.
What Is an Oxygen Sensor?
It was in the early 1980s when the earliest oxygen sensors were developed. An oxygen sensor is a critical part of the emission control system of a vehicle. It is similar to the shape and size of an ordinary spark plug. A standard car engine has several oxygen sensors that protrude in its exhaust system.
How long do oxygen sensors last?
If conditions are right, modern oxygen sensors can last 100,000 miles. However, some problems happen sooner. In most modern cars, there are from two to four oxygen sensors. A car with a V6 engine has one oxygen sensor in every exhaust manifold and another one after the catalytic converter.
Why does Bosch say oxygen sensor is bad?
Bosch, one of the leading auto components manufacturers, says that the oxygen sensors of older cars malfunction because of different reasons. There are times when they are contaminated with oil or gasoline additives from old engines.
When were oxygen sensors invented?
It was in the early 1980s when the earliest oxygen sensors were developed. An oxygen sensor is a critical part of the emission control system of a vehicle. It is similar to the shape and size of an ordinary spark plug. A standard car engine has several oxygen sensors that protrude in its exhaust system.
How to clean a sensor?
Get a scrub or old toothbrush. Scrub the end of the sensor and remove the dirt and grime that have accumulated on its tube-shaped end. Then use a can of compressed air and spray on it so it will get cleaned.

Advantages
Cost
- If you decide to do the repairs, the cost to replace the oxygen sensor yourself can be between $20-$94, depending on the brand and type of sensor you buy. To have the repairs done by a mechanic the price can be anywhere between $113 to $478 for parts and labor. The big difference in price is caused by the different prices of the sensor for certain ...
Operation
- Since 1980, the vast majority of cars have been fitted with an oxygen sensor. It works as part of the emissions controls, and communicates with the engine management computer to help the car run as efficiently as possible while producing lower levels of emissions.
Examples
- In a gasoline engine there is a particular ratio of gasoline and air that is perfect for combustion. If theres less air than the perfect ratio requires, there will be additional fuel left over after combustion. This is known as rich mixture. A rich mixture is problematic as it causes excess pollution and can negatively impact the atmosphere.
Purpose
- The oxygen sensor was developed to help combat this issue and prevent excess pollution or damage to the engine. Its typically placed in the exhaust pipe and it works to detect lean and rich mixtures, and works with the engines computer to help adjust the amount of fuel entering the engine. The result is less pollution, better performance and less money spent which is what we s…
Performance
- Having a working and accurate O2 sensor is essential for achieving optimal performance and fuel efficiency in your car. There are a number of variables which can affect the amount of oxygen available to the engine, such as air temperature, altitude, engine temperature, engine load, barometric pressure and more.
Symptoms
- There are several symptoms to look out if you suspect an issue with the oxygen sensor on your car. The first and most obvious sign will be that the check engine light will come on, and your mechanic should be able to confirm that its emitting an O2 sensor code. If the garage confirms that the sensor is damaged it will need to be replaced. There are more subtle signs to be aware …
Diagnosis
- When you take your car to the mechanic theyll usually run a few diagnostic tests to confirm the issue. Theyll use an OBD2 diganostic tool to confirm that the check engine light is sending out the code for the oxygen sensor. This process is commonly done during an automotive tune up and shouldnt cost any extra money to test for. If a car has more than one O2 sensor then the scan sh…
Use
- Once the problematic sensor has been identified by the engine computer, the mechanic will use an oxygen sensor socket to loosen and remove the device. The socket will fit on to a cheater bar and can be purchased from most major car part outlets, so if youre planning on making the repair yourself its a good idea to pick one up. The sensors tend to be fitted fairly tight, so its a good ide…
Risks
- When you take your car to a mechanic, youll be paying for the parts as well as the labor involved. Garages will often add a mark up to the parts, while the labor costs can often be quite expensive. Replacing the sensor is a job that most people should be capable of handling themselves, provided theres not a serious issue with the sensor. Occasionally it can rot into the …