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P0420 Code Fix How Its Done Catalyst Efficiency Below Threshold
Here is a tutorial on P0420 code fix catalyst efficiency below threshold How To Diagnose a p0420 code. p0420 Code Fix how to diagnose and fix a Catalytic Converter and what to look out for http://youtu.be/-c8090n1Ihs first make sure no other DCT codes are present once all the other DTCs are fixed, clear the codes and start the engine up. Warm ...
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