Quote Originally Posted by Drake314 View Post
damm, for those of us novice car mechanics what caused this P0420 code/what does it mean?
The P0420 DTC means that the catalytic converter is below a minimum efficiency level set by the PCM. To put it in simple terms, the stupid torn intake pipe just ruined my catalytic converter which in the 2009-2011 cars is $1800 from the dealer! (Because it's a Maniverter; the exhaust manifold and catalytic converter is one big unit)


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