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fault code 0021 and 0420 on 2003 NissanPathfinder


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udtseal
New User

Jun 7, 2017, 2:07 PM

Post #1 of 2 (429 views)
  post locked   fault code 0021 and 0420 on 2003 NissanPathfinder  

Can anyone explain what is exactly the problem with these codes are and what do I need to fix?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jun 7, 2017, 3:00 PM

Post #2 of 2 (425 views)
  post locked   Re: fault code 0021 and 0420 on 2003 NissanPathfinder  

The P0021 is Camshaft Position - Timing Over Advanced or System Performance (Bank 2)
That will require a mechanic looking into it further.

The P0420 is poor Catalyst efficiency. 95% of the time, that is a bad Catalytic Converter



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