catalytic converters
I have a 2013 Honda accord ex 4 cyl...I got a P042 code...I also just learned that I have TWO CATs (ugh), one in front and one under neath...how do i determine which CAT needs to be replaced?
I also need to check for exhaust leakage and read about soaking exhaust pipe/joints with soapy water and then blowing air up the exhaust pipe...is that bad for the system?
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