The oxygen sensor detects the level of unburned oxygen present in your car’s exhaust system. Over time, this small device collects carbon deposits and affects fuel economy and engine power. Read on to learn how to clean car O2 sensor to save money and improve your vehicle’s performance.
Steps on how to clean car oxygen sensor
Here is the process on how to clean oxygen sensor in car:
Locate the sensor
The oxygen sensor is usually found on the exhaust manifold or downpipe. Check your car manual if you have trouble finding it.
Gather your materials
You will need:
- Socket wrench
- Cleaning solution (carburettor cleaner or specific O2 sensor cleaner)
- Petrol
- Wire brush
- Clean cloth
- Safety glovesRemove the sensor
Turn off your engine and let it cool down. Disconnect the sensor wire and use a socket wrench to unscrew the sensor carefully.
Soak the sensor
Fill a container with the cleaner. Place the sensor in the solution. Leave it to soak for at least 1–2 hours. This helps loosen dirt and carbon buildup.
Brush the sensor
Thereafter, gently scrub the sensor with a soft brush or toothbrush. Do not damage the tip or wires. This is a key part of how to clean car oxygen sensor properly.
Wash and dry
Rinse the sensor with clean petrol. Let it air dry fully before putting it back. Do not use a cloth to dry.
Reinstall the sensor
Once dry, fix the sensor back into its position. Tighten it using the sensor socket. Start your car and check if the engine runs smoothly.
FAQs
- How often should I clean my oxygen sensor?
Clean your oxygen sensor every 30,000 to 50,000 kilometres or when you notice poor fuel economy.
- Can I drive with a dirty oxygen sensor?
Yes, but it will reduce fuel efficiency and may cause your engine to run roughly.
- How can I detect a bad oxygen sensor?
Some common signs are reduced mileage, rough idling, power fluctuations, sulfuric smell from exhaust and engine light codes P0141 or P0172.
Conclusion
Knowing how to clean O2 sensor in car at home can save you from costly repairs and replacements. However, you need to consult a mechanic or OBD-II scan before assuming cleaning is needed.
But even a well-maintained car can face unexpected accidents. That’s why third party insurance is not just a legal need—it’s smart protection. If a sensor fails and causes bigger damage, comprehensive car insurance will cover your repair bills.
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