Answer:That's a new one for me, and I cannot see it having any effect on preventing a P0420 DTC, but it is illegal. P0420 indicates the catalytic converter has lost its efficiency in reducing harmful ...
My 2005 Nissan Altima's "Service Engine Soon" light has turned on twice in the past month. A diagnostic test indicates that my catalytic converter is "failing". If I don't have the converter replaced ...
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