Error code PO420..Could it be the sportscat?
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Error code PO420..Could it be the sportscat?
Evening all,i bought my 2004 STI 3 week ago with no lights on dash,ont the way home roughly 30 mile into to the journey the engine management light came on,so i borrowed my mates little cheapo code reader,it was PO420.So then removed the light.
Drove it again today and its come on again,after around 30 mile,not straight away.
P0420 means catalyst system efficiency below threshhold,It has got a sports cat in it,could it be that,the previous owner says hes never had it come on but he could be telling porkies i suppose.
Is it worth taking it to someone with proper diagnostic tools to pinpoint the problem..
Thanks
Andrew
Drove it again today and its come on again,after around 30 mile,not straight away.
P0420 means catalyst system efficiency below threshhold,It has got a sports cat in it,could it be that,the previous owner says hes never had it come on but he could be telling porkies i suppose.
Is it worth taking it to someone with proper diagnostic tools to pinpoint the problem..
Thanks
Andrew
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