Newbie need help

[NouseforaName]

Hi all Newbie here,

 

Pardon my boldness since im asking for help already. my Chevrolet aveo 1.4A ls 2009 engine light came on.

Did a diagnose via Torque app and found out error code P0420. Web look up and found that refer to (Catalyst system below efficiency). Seem like my catalyst converter go kaput or my oxygen sensor. 

Anyone face this issue before care to share what to look out for? As I don't change the wrong things or kena chop carrot..

 

Thank you in advance.

Cheers

[RadX]

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[mcpd001]

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