Why do o2 sensors fail?

Related questions

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6. What does co2 sensor do?
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Tags

1. #contaminants
2. #compensate
3. #overly
4. #result
5. #sensors
6. #enter
7. #exhaust
8. #emissions
9. #various
10. #consumption
11. #failing
12. #system
13. #sensor
14. #which
15. #caused
16. #causes
17. #failures
18. #internal
19. #heater
20. #increased
21. #circuit