Trouble code P0420

2014 NISSAN PATHFINDER
146,723 MILES • 3.5L • 6 CYL • 4WD • AUTOMATIC
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KMCCONKEY92
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  • 1 POST
Trouble code P0420-Catalyst System: Efficiency Below Threshold (Bank 1).
Jan 1, 2020 at 11:53 AM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good evening,

You need the cat converter for bank1. The precious metals are worn out and it needs to be replaced.

If you have less than 80,000 on your car then it is a warranty item.

Roy
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Jan 1, 2020 at 4:29 PM