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What does the O2 sensor do?

How can I defeat it? Geo metro, 1 liter
ch1meg, June 2006
The O2 or Lamda sensor constantly monitors the exhaust of a vehicle which it then passes to the the Engine Managment System.

I don't know what you mean by 'defeat it'. Has some one told you that it is broken and needs replacing? When they pack up they need to be replaced but they are not cheap.

Terry, June 2006
link Click here to see other fixes for Geo Metro.