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P0440 code and rich/ lean fuel

duswickware

New member
Been using my torque app playing around to figure it out. I know the p0440 is evap code but this is the only code I have. In another part of the app( o think the test part) shows lean/rich sensor swith time...not sure what this is, told it may be a o2 sensor. Not sure how to test anything on this app yet so any helps good.
 


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