Lambda (oxygen) sensor replacement

Replace a faulty oxygen sensor causing poor economy.

Typically £91 – £132 depending on your car · About 45 minutes

Get your exact price

Free, instant and no obligation. You won't be charged until the work is done.

About this job

Lambda sensors measure oxygen in the exhaust so the engine can get the mixture right. A failed one raises fuel use, causes emissions faults and turns on the engine light.

Signs you might need it

  • Engine light with oxygen sensor codes
  • Poor fuel economy
  • Failed emissions test

What's included

  • Fault code read
  • Replacement lambda sensor
  • Fault clear and road test

Plus travel, disposal of old parts and a 12-month guarantee.

Typical prices by car size

Small car (e.g. city car, supermini)£91
Medium car (e.g. family hatchback, saloon)£101
Large car / SUV / MPV£117
Premium or performance car£132
Small van / pickup£122

Lambda (oxygen) sensor replacement prices for popular cars

Questions about lambda (oxygen) sensor replacement

How long does lambda (oxygen) sensor replacement take?

Usually about 45 minutes. Your mechanic will tell you if your car needs longer.

Can it be done at my home?

In most cases, yes. Mobile mechanics need a safe, level place to park, such as a driveway or quiet street. If your job needs a workshop we'll let you know before you pay anything.

Is the price fixed?

Yes. The price on your quote is what you pay. If the mechanic finds something else, they'll explain it and give you a separate price – nothing extra is done without your OK.

Is the work guaranteed?

Yes – parts and labour are covered for 12 months. See our guarantee page for the details.

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