The role of the oxygen sensor in cars? In a few minutes, you will experience what it means to repair a car until it goes bankrupt!

My cousin's uncle, who has owned a garage in the Bay Area for twenty years, says that The role of the oxygen sensor in cars is like being a medical examiner - it doesn't cure the disease, but it tells you where the disease is!Last week an older sister drove over in a Camry and her gas mileage suddenly dropped from 28 MPG to 19, and it turned out that the oxygen sensor was gummed up with oil (is that something you can say?).

Positive teaching material: the old king's family's hanlanda regular cleaning sensors, ten years car exhaust gas test once over.He used the local method is particularly interesting - every six months to add a bottle of Chevron gasoline additives, said to give the sensor "drink green tea detoxification".

Negative example: Xiaohong book that drive X5 net red must wait until the engine light is on to deal with, and finally the catalytic converter burned, the repair cost is enough to buy three sets of iPhone 15. special reminder of the German car, the sensor breaks down quickly and also ridiculously expensive!

Remember The role of the oxygen sensor in cars is essentially to save gas!My neighbor, Mr. Zhang, didn't believe me and pulled out the fault sensor to save gas, and his gas mileage went up by 30%.Is this operation in the atmosphere?No, it's on the negative level!

Dealers love to scare people with The role of the oxygen sensor in cars.Last time my car reported P0171 code, they said it cost $800 to replace the whole set, but I sprayed the connector with $12 CRC cleaner, and the code disappeared by itself.Be careful!This method only works for minor oxidation!

The numbers don't lie: EPA report shows 72% of emissions overruns are linked to sensor failures.Older immigrants' favorite mistake?Thinking that if the engine light doesn't flash, you don't have to worry about it!In fact, the role of the oxygen sensor in cars failure at the beginning of no symptoms at all, and so feel already late eight spring.

Remember these three things:
1. Check connectors every 50,000 miles (just spray with WD-40)
2. Don't keep going to cheap gas stations for gas (bad gas ruins sensors)
3. Check for cold-start shaking in the winter (sensors are probably frozen solid)

▼ Data Sources ▼
- EPA 2024 Vehicle Emissions White Paper
- ASE Repair Guide 11th Edition
- Reddit r/MechanicAdvice discussion data