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Check Engine Light On

  #1  
Old 03-15-2014, 09:42 PM
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Exclamation Check Engine Light On

Hi Guys. I got a 1998 Honda Accord V6 and the check engine light turned on giving the code p0420. I believe is for the 02 oxygen censor. Does anyone have any tip about this? Thank you.
 
  #2  
Old 03-16-2014, 12:30 AM
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more than likely a bad cat.
 
  #3  
Old 03-16-2014, 08:42 AM
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Check for exhaust leaks (can cause P0420) and perform a "shake" test on catalytic converter. If it rattles, it needs replacement.

Also check briansmobile1 videos on youtube for how to inspect catalytic converter for performance.

There are new bolt-on converters from several sources on Amazon, Ebay for reasonable prices and most folks seems pleased w/ them.

good luck
 
  #4  
Old 03-16-2014, 04:48 PM
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Thanks guys. It is posible it can be the 02 sensor oxygen that might be gone bad? @TexasHonda & @live2rice
 
  #5  
Old 03-16-2014, 05:12 PM
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Catalytic converter, exhaust leak, o2 sensor or AF sensor, probably in that order.

The AF sensor should work correctly w/o the heater element once fully warmed so replacing AF sensor may not cure P0420, but there's a chance.

good luck
 
  #6  
Old 03-16-2014, 06:30 PM
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use a spark plug non fouler. worked for me and i did this less than a month ago. I have my spark plug non fouler + diy in 6genaccord forum
$5 work around
 

Last edited by lmrj0030; 03-16-2014 at 06:33 PM.
  #7  
Old 03-19-2014, 02:48 AM
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Welcome to the HAF..
 
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