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What is diagnostic code PO420 on a 2002 Nissan sentra

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 422 Answers

SOURCE: Diagnostic Codes

yes here just give me the codes and ill look them up for you

Posted on Aug 25, 2008

pal03246
  • 705 Answers

SOURCE: 2002 Nissan Sentra - no dashboard lighting

Blown fuse, or could be the dimmer switch. Check fuses first.

Posted on Sep 18, 2008

mrgreenz
  • 962 Answers

SOURCE: Computer box codes

Do you mean the scanner code somebody gave you for a problem ? you will have to give us more info to be able to help you. If you have a problem with your vehicle and have it scanned it will give you the codes relating to the problem you may have.I don't know if those are the codes you mean.

Posted on Nov 14, 2008

ewashmidas
  • 362 Answers

SOURCE: I got code PO420 and PO430

Here are the most common problems,

Air leaks at the exhaust manifold or in the exhaust pipes. Catalytic converter is damaged, contaminated or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture. Front HO2S and/or the rear HO2S is loose in the mounting hole. Front HO2S older (aged) than the rear HO2S (HO2S is lazy)

Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. Autozone turning the light off does nothing for you, and is against their company policy. If you do not have the proper tool, reference materials or experience I would take it to a professional. Finding out the trouble code is just he start of the diagnosis process.

Hope this helps.

Dave

Posted on Feb 28, 2009

  • 1201 Answers

SOURCE: 2002 Nissan Sentra Check engine light diagnostics

There is a leak somewhere in the evaporative emission control system. The best way to test that is have a smoke test done on it to find out where the leak is. You'll have to call around to see if any repair shops have a smoke machine, or call a dealer.

Posted on Mar 24, 2009

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Do you mean the scanner code somebody gave you for a problem ? you will have to give us more info to be able to help you. If you have a problem with your vehicle and have it scanned it will give you the codes relating to the problem you may have.I don't know if those are the codes you mean.

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Diagnostic Codes


yes here just give me the codes and ill look them up for you

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