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Car oxygen sensors are also called lambda sensors.

Expert Mechanics

200+

Total expert car oxygen sensor replacement mechanics

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197

Total number of car oxygen sensor replacement reviews

Average Rating

Average user rating for car oxygen sensor replacement bookings

Top Mechanics For Car Oxygen Sensor Replacement & Repairs

68 Reviews

Garage in Chesham, 7 years of experience

BACK ON ROAD LTD offers a variety services on high quality standards, in no time such as: Diagnostics Coding Programming Brakes Exhaust Mechanical Electrics Upgrades ..... and more The only solu...

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Why visit a garage? when you can opt for the convenience of a mechanic that comes to you, whether at home or at work. The range of work carried out includes (but is not limited to) servicing, brakes, batteri...

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Garage in Leyton, 15 years of experience

Have 15 years of experience as an mot inspector and can check if car is road legal and safe to drive

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Mobile mechanic in Swindon, 15 years of experience

I did my apprenticeship at a garage in Swindon as I studied with Northstar College. After graduating I left and went to Charlie Browns auto services for 2-3 years. Following my time at Charlie Browns I went ...

PETER 17th January 2022

Toyota RAV4 • Additional work following previous booking

200 Reviews

Garage in Birmingham, 7 years of experience

I studied at City College in Birmingham and received my City & Guilds up to level 3 qualifications, after gaining my qualifications I have worked in the family business called AAR Servicing And Accident Repa...

169 Reviews

Garage in Canvey Island , 17 years of experience

I done my apprenticeship at bates BMW main dealer. Since then I have worked at Independent garages. I have since decided to go out on my own as a Mobile Mechanic. I am able to offer a wide range of repairs i...

45 Reviews

Garage in Littlehampton, 40 years of experience

With an average age of nearly 50, we have a wealth of knowledge and experience to be able to service and repair your vehicle to a high standard. We are the one stop shop for all your vehicle needs. This incl...

218 Reviews

Mobile mechanic in Wellingborough , 10 years of experience

Hi I’m Michal. I've been doing cars for about 10 years specifically for Vehicle Mechanical, Electrical and Trim (MET) Technician last 2.5 years. Had lots of training in recent VW group technology so that’...

62 Reviews

Garage in Bodmin, 20 years of experience

We are mobile mechanics based within Mid Cornwall serving the County for all of your mechanical needs including; Breakdowns, Clutch replacement, Servicing, Welding, MOT repairs, Brakes, Tyres and Diagnostics...

1236 Reviews

Garage in Darwen, 14 years of experience

I started my apprenticeship when I left school at the age of 15. I’ve been fully qualified for 11+ years with NVQ level 1, 2 and 3. I’ve been an MOT tester for 10 years. Here at Jamie’s mobile mechanic w...

TIA 10th June 2021

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195 Reviews

Garage in Chelmsford, 10 years of experience

I pride myself on my work making sure I carry out all work to a excellent standard, I have been in the motor trade for 9 years plus. I started at fords as an apprentice and became a fully qualified mechanic/...

66 Reviews

Garage in Grays, 25 years of experience

I began my career with a Jaguar specialist where I completed my apprenticeship and was there for 4 years in total. I worked with French car specialist for 6 years and subsequently I worked with different gar...

119 Reviews

Mobile mechanic in Tamworth, 24 years of experience

Welcome to t-s-performanceuk t-s-performanceuk is committed to delivering exceptional service and customer satisfaction at a time and a place suitable for your busy lifestyle at the fraction of the cost of a...

283 Reviews

Garage in Sittingbourne , 27 years of experience

Our team of hard working mechanics have many years of experience in the motor industry - this means that your vehicle will be left in good hands at our garage. We have excellent facilities that have the late...

47 Reviews

Garage in North Lanarkshire, 20 years of experience

I have been in the motortrade for 20 yrs working on a vast range of vehicles including motorbikes & hgvs and 4x4 but most of my career has been spent on LGV vehicles and spent 3 years working in a engine rec...

Frequently asked questions about car oxygen sensor replacement & repairs

Read our answers to questions about car oxygen sensor replacement costs, symptoms and more.

What does an Oxygen Sensor do?

The sensor measures the amount of oxygen, or O2 present in the fuel / air mixture and engine emissions. Most cars have several oxygen sensors spread over the engine and its ancillaries; from the inlet manifold to the exhaust. Some cars even have a seperate sensor for each cylinder.

Usually the sensor puts out a voltage between 0.1 and 1 volt depending on the current passing through. This information from the sensors is processed by the engine's computer (ECU). The ECU in turn optimises the amount of fuel and air entering the engine to ensure optimal combustion and reduced emissions.

What does a oxygen sensor replacement involve?

  • The mechanic will read the ECU for possible fault codes related to the oxygen sensors.
  • The mechanic will inspect the sensor and ancillaries (like the electrical connectors).
  • If necessary, the mechanic will replace the sensor.
  • The mechanic will advise if other components need to be replaced as well.
  • The mechanic will check the sensors again.
  • The mechanic will test drive the car, if necessary the mechanic will make adjustments.

Can I replace the oxygen sensor myself?

Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a car oxygen sensor replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

What are the symptoms of a faulty Oxygen Sensor?

  • When the 'Check Engine' light on your dashboard is on.
  • When the engine won't start or cuts out during operation.
  • When the engine misfires.
  • When the engine runs rough (a rough idle for example).
  • When the engine doesn't perform as well as usual.
  • When the car's fuel consumption is higher than usual.
  • When the car fails an emissions test.

How long does it take to replace an o2 sensor?

A car oxygen sensor replacement usually takes around 1 hour, but can take less or more time. Ultimately, the time that the job will take will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

How often should you replace an oxygen sensor?

For an optimal combustion of the air / fuel mixture within the engine it is important to service the oxygen sensors as and when stipulated in the guidelines set out by your car's manufacturer. Professional and timely maintenance is essential to prevent further damage of other parts of the engine. Should you experience problems with an oxygen sensor, then it is advisable to have it inspected and, if necessary, have the sensor replaced.

What happens if I don't replace my oxygen sensor (or lambda sensor)?

Over time, an oxygen sensor can soil due to the dirty air passing along it. This decreases the sensor's ability to identify the amount of oxygen that is present in the area of the engine system it is situated. This can lead to the ECU not being able to regulate the fuel / air mixture correctly which can have as a consequence that the engine will run lean or rich. In turn the car can have poor fuel consumption, equally it might cause the car to fail an emissions test.

In many cases an oxygen sensor can be cleaned of dirt to restore its functionality. In other cases it can be that the oxygen sensor has really failed, in which case it needs to be replaced to prevent further issues and inconvenience.

Can I drive with a faulty oxygen sensor?

If you suspect there is any issue with your oxygen sensor (also known as an O2 sensor) or there are concerns about its age or condition, book an inspection with a professional mechanic immediate effect. Driving with a faulty oxygen sensor can lead to further complications on your vehicle.

Can you replace just one oxygen sensor?

A car usually has two oxygen sensors if it has a single exhaust pipe and catalytic converter, and sensors could be independently replaced. It is advisable to check with a professional mechanic whether it is possible to just replace one sensor as this can depend on a number of factors.

Is the oxygen sensor checked during an MOT?

The oxygen sensor or lambda sensor if often flagged during the emissions check in an MOT test. As the sensor helps regulate the fuel/air mixture going into the engine, it follows that a faulty lambda sensor is often the cause of emissions that are too high. It's recommended to check for a functioning oxygen sensor, especially prior to an MOT test.

What causes the oxygen sensor to break?

Due to constant exposure to heat being fitted on the exhaust of the car, the oxygen sensor will eventually suffer from wear and tear over time. Contamination from debris and dust can also cause the oxygen sensor to become faulty. Typically, the oxygen or lambda sensor fails due to damage from being in close proximity to extremely high temperatures.

What is the average lifespan of an oxygen sensor?

Oxygen sensors can typically last anywhere from 40,000 to 100,000 miles however they may need to be replaced sooner if damaged or corroded.

Is a faulty oxygen sensor an MOT failure?

A faulty oxygen sensor in itself should not cause MOT failure as it is not checked as part of MOT. However, a failing sensor can lead to engine performance issues, if these result in emissions issues it is possible your vehicle can fail its MOT.

How much does it cost to replace oxygen sensors?

On average an oxygen sensor replacement costs around £150. Typical prices can range anywhere from £110 to £220. Ultimately, the cost of replacing a oxygen sensor (or lambda sensor) depends on your car and what parts your car's manufacturer recommends using for the replacement. Find out what you could save by having the oxygen sensor replaced by ClickMechanic by selecting your car at the top of this page!

Check out the ClickMechanic price for a car oxygen sensor replacement. See the averages for different makes below. We consolidate industry standard data with millions of data points to give you the most accurate price. These estimates may include Lambda sensor.

Estimates on average repair costs, such as the above results for a car oxygen sensor replacement, are based on ClickMechanic's quote data which combines multiple third-party sources. Actual costs may vary. We provide estimates on average repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.

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