P0420
 

i got this check ngine light on my 2000 si. but the thing is i had the code with type-r headers. i erased the code and then later on i got a custom piping for the car and the same code appears on the ecu. any suggestions.

Re: P0420 (EM1SiR85)
 

what does the code say behind it? might be a oxygen sensro problem?

P0420 (67) - Catalyst System Efficiency Below Threshold

Secondary O2 sensor says .... your catalytic converter is missing or dead.

Re: (Eran)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eran &raquo;</TD></TR><TR><TD CLASS="quote">P0420 (67) - Catalyst System Efficiency Below Threshold

Secondary O2 sensor says .... your catalytic converter is missing or dead.</TD></TR></TABLE>

had the same code on my accord, turns out the cat was going, but it only happenes if im sitting in traffic for a LONG time just erase it and go on your way https://honda-tech.com/forums/images...s/emsmilep.gif

Or just buy a $15 mechanical O2 sensor spoof from eBay.

http://cgi.ebay.com/ebaymotors...wItem

Re: (Eran)
 

lmao looks like some one made it in there garage, you make it and are you trying to get some revenue in ??????? https://honda-tech.com/forums/images...s/emsmilep.gif

Re: (Team RS2)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Team RS2 &raquo;</TD></TR><TR><TD CLASS="quote">lmao looks like some one made it in there garage, you make it and are you trying to get some revenue in ??????? https://honda-tech.com/forums/images...s/emsmilep.gif </TD></TR></TABLE>

Hah, no. But the part itself is like $8 at an autoparts store .... so I figure it's worth the extra $5 in shipping to not have to make one yourself. Most people don't have a drill press https://honda-tech.com/forums/images/smilies/emwink.gif

They're made out of two spark plug foulers.