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I'm getting a p0420 engine light on my car. And I recently replaced the cat and o2 sensors. Any Ideas?

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  • I'm getting a p0420 engine light on my car. And I recently replaced the cat and o2 sensors. Any Ideas?


Answers

Answer #1 | 23/12 2013 17:29
Aftermarket converter will not be good enough for the computer to accept,especially imports.
Positive: 100 %
Answer #2 | 24/12 2013 20:33
That was some shiity random part replacing, wasn't it?
Positive: 0 %
Answer #3 | 23/12 2013 17:25
Bring the car to the local dealer and have the ECM reflash or reprogram with the newest software.. Ps: Aftermarket CAT sometime will not work well...

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