1999 HONDA CRV 1999 HONDA CRV CODE P0420

  • Tiny
  • eguzman72
  • 1999 Honda CRV

Computer problem
1999 Honda CRV 4 cyl Four Wheel Drive Automatic 180000 miles

what does this code mean? I think it needs a regular maintenance but I am not sure.

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Wednesday, June 2nd, 2010 AT 8:05 AM

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  • Tiny
  • KHLow2008
  • Expert
  • 41,997 posts

Hi eguzman72,

P0420 = Catalyst efficiency below threshhold.

Usually this means the catalytic converter is bad. It is not a regular maintenance item.

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Thursday, June 3rd, 2010 AT 11:00 AM

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