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Lambda2 Reading 0?

brandon_5.0h

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Brandon
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2019 Mustang GT
Good afternoon all,

I have recently had some reoccurring issues with my Lambda2 reading 0, or off. It does this at random times, regardless of weather, gas, etc. It stopped for around a month, as the car had been sitting, but recently started again. This happens during driving, flashing on and off, or simply reading off. However, this mainly occurs if idling for a minute+ at a time. Obviously, the car hardly runs with this issue. I am simply curious, as there are only 20k miles on the car, with 5k being on E85 (Been back on 93 for around a year now), as to what this may be. I am one to believe it to be an 02 mechanical issue rather than tune-related. Any thoughts or ideas are welcome.
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Cory S

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One of your upstream O2 sensors may be borked or loose connection.
put a OBD2 reader on it….
 
 








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