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Originally Posted by JFP in PA
Just as a reference point, you should get the exact same codes with a $40 code reader that a shop with a $17,000 a year PIWIS gets; only difference is what is done with that information. Diagnostics is more than reading codes, it is interpreting them.
In all the years I’ve been turning wrenches, I have never seen all four O2 sensors on a car crap out at one time; never………..
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Yep,
If all four O2 sensors are barking they are just trying to tell me something. All going bad on the same day never happens so... What are they saying?