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Failed emissions with codes

  #1  
Old 05-24-2013, 04:55 PM
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Join Date: May 2013
Posts: 2
Default Failed emissions with codes

1998 Honda Accord 4 cyl
Failed emissions with the following OBD Trouble Codes:

P0420 Catalyst System Efficiency Below Threshold (Bank1)
P0401 [COLOR=blue !important][COLOR=blue !important][COLOR=blue !important][/COLOR][/COLOR][/COLOR]Exhaust Gas Recirculation Flow Insufficient Detected
P1457 (no description but I have been told it is an EVAP leak?)

My wife lost gas cap 3 years ago and has driven the car for 50 miles. I bought the original gas cap after few days in Honda Dealership and week after I got engine light on. I had engine light on for the last 3 years and always passed emission test except this year because now test check computer as well.

Please help.
 
  #2  
Old 05-24-2013, 08:00 PM
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Join Date: May 2007
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Posts: 135
Default

I've had that P0420 code and it seems like everyone gets it at some point in an Accord's life.

Here is a post I did awhile back on it, basically I looked for leaks, looked at O2 sensor and the catalytic converter (it ended up being a combination of all 3 but an easy fix).

This should address the P0420 code and usually the other two will hopefully clear out as well.

Here is the link to the post

https://www.hondaaccordforum.com/for...de-pics-50458/
 
  #3  
Old 05-24-2013, 08:36 PM
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Thank you mamtsberg I will try.
 
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