Exhaust Sensor Repairs
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£166.97
Average quote for exhaust sensor repairs
The lambda sensor - also known as the oxygen or O2 sensor - sits in the exhaust system and is responsible for monitoring the oxygen levels of exhaust gas. It informs the car’s engine control unit (ECU) whether the fuel mixture is burning rich, meaning there is too much fuel, or lean, meaning there is too much air.
Sensors are notoriously prone to malfunctioning, especially the lambda sensor, due to its location in the exhaust stream. It can easily become contaminated and stop working correctly. Other causes of O2 sensor failure include electrical issues and old age.
Exhaust fitting
The average price of an exhaust fitting on FixMyCar is £135.25. If you’re experiencing signs of a faulty exhaust, and think it’s time to get a new one fitted, a professional will source the right parts and fit the new components for you.
Can include- Parts sourcing
- Exhaust fitting
Car exhaust repair
The average cost of an exhaust repair booked on FixMyCar is £112.67. Exhaust repairs can range from sealing holes and tightening fittings to replacing parts with extensive damage. You may need an exhaust repair if you notice an unusual noise coming from the exhaust.
Can include- Diagnosis
- Exhaust hole repair
- Exhaust silencer repair
- Exhaust replacement
Signs of exhaust sensor failure
When the oxygen sensor fails, it is usually accompanied by several easy-to-spot symptoms, one of which is that the check engine light may be illuminated. You’re also likely to experience performance issues, increased emissions, a sulphur smell from the exhaust, rough idling and engine misfiring.
You can find out more about the exhaust system and how it works here.
Learn more about exhausts
How does an oxygen sensor work?
The oxygen sensor measures the residual oxygen content of the exhaust gas and sends this information to the ECU in electronic voltage. The ECU then adjusts the air-fuel mixture accordingly.
Can a car run without an oxygen sensor?
A car without an oxygen sensor will still work, but the ECU won’t be able to determine the correct air-fuel ratio, which will produce numerous side effects and could damage the engine.
Does cleaning an O2 sensor work?
Cleaning an O2 sensor isn’t generally a good idea. If you try, many delicate electronic components could be damaged; that’s why it’s best to arrange a replacement instead.
How much does it cost to replace an oxygen sensor?
Replacing an oxygen sensor costs £196.23 on average, according to FixMyCar’s data.
