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Old May 21, 2007 | 02:32 PM
  #11  
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rh-motors
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67.............P0420.............................. ...............Catalyst system efficiency below threshold






source from my site

http://rh-motorsport.com/forum/index.php?topic=48.0


hope this helps
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Old Nov 3, 2007 | 03:16 PM
  #12  
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Haid
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Default 99 accord ex 4cyl -- check engine light

I just got the check engine light on today with my 99 accord ex 4cyl. Checked the gas cap as mentioned in ower's manual. What would be the top 2 problems you think of or usually happen? And if I disconnect the negative connector from the battery for 2 minutes, will the light come back on even there is no problem or not come on while there is a problem?? Any advice or opion is greatly appriciated.

Thanks,
Haid
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Old Nov 3, 2007 | 03:30 PM
  #13  
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Misa
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Haid:

Hi and welcome to HAN. please dont hijack someone elses thread with your problem. Searching the forum can help you find an answer quicker than waiting for a reply.


anyway.... follow the steps here to check the code.
https://www.honda-acura.net/forums/s....php?p=3679376

Last edited by Misa; Nov 3, 2007 at 03:33 PM.
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Old Nov 5, 2007 | 12:31 PM
  #14  
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sony_k
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Hi my first time in forum

My accord 2001 4dr EX is presentig P1167 and P1164 code after replace a o2 sensor. The check engine is light yet.

What is the problem now??

Last edited by sony_k; Nov 5, 2007 at 12:38 PM.
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Old Nov 5, 2007 | 12:36 PM
  #15  
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Chiovnidca
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Originally Posted by Jani 5
Haid:

Hi and welcome to HAN. please dont hijack someone elses thread with your problem.
heeeeee
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Old Nov 5, 2007 | 02:36 PM
  #16  
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98CoupeV6
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Originally Posted by sony_k
Hi my first time in forum

My accord 2001 4dr EX is presentig P1167 and P1164 code after replace a o2 sensor. The check engine is light yet.

What is the problem now??
search...
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