answersLogoWhite

0


Best Answer

P0420 is the catalyst efficiency code. The most common thing is the catalytic converter itself is no longer functioning properly. The other likely thing is the rear oxygen sensor is no longer working properly.

User Avatar

Wiki User

9y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is a PO420 code on a 1997 Toyota Camry and how do you fix it?
Write your answer...
Submit
Still have questions?
magnify glass
imp