Please gurus in the house help interprete n find solution to the code PO420 on Accord 1998.
The "check engine" light is on.
Thanks all

Catalyst efficiency below thresold. This means your catalyst is going bad

nairacountry: Please gurus in the house help interprete n find solution to the code PO420 on Accord 1998.
The "check engine" light is on.
Thanks all

Catalyst going bad "or" you have a leak on the exhaust pipe just before the catalyst.

Thanks Gazzuzz and Mayor2013, there is no leak but was told "catalyst efficiency below threshold bank 1".
How do I remedy this? Wat should I do? Change d Oxygen Sensor as advice by my mech? The one I saw @ Utako mkt seems Toks, shld I buy it? Or where can I get original new one in d FCT?
Or perhaps it's sumtin else wrong wit it? Thanks

nairacountry: Thanks Gazzuzz and Mayor2013, there is no leak but was told "catalyst efficiency below threshold bank 1".
How do I remedy this? Wat should I do? Change d Oxygen Sensor as advice by my mech? The one I saw @ Utako mkt seems Toks, shld I buy it? Or where can I get original new one in d FCT?
Or perhaps it's sumtin else wrong wit it? Thanks

Since there is no leak then for sure you have bad catalytic converter contact luvinghubby (https://www.nairaland.com/luvinhubby) for a "brandnew" one.

[img]http://t3.gstatic.com/images?q=tbn:ANd9GcT_aFG8V_lXHnenW-hgqANx_YsVtHrUSpjc1PDoK3hum8fhh39mcdhJ3yVM[/img]

Thanks. I had