☰
AutoCodes.com | All About OBDII Engine Codes
Find a Shop |  Ask Auto Expert
Ask a Question

2002 sentra with 125K on it. CEL is on. p0420 is the code.

0 like 0 dislike
369 views
by

02 sentra, 125K. Code p0420. Changed lower 02 sensors they looked orig equip.Top ones were newer. Did not disconnect battery to reset ECM. Other than fuel cleaner, high octane fuels, anything else to try?

Vehicle: 2002 nissan sentra gxe

1 Answer

0 like 0 dislike
by (8.9k points)

Unfortunately you may have to replaced the Three way catalyst converter to fix the problem.

P0420 = https://www.autocodes.com/p0420_nissan.html

Related questions

0 like 0 dislike
1 answer 318 views
P0420 2005 Nissan Sentra -
asked Jul 6, 2017 by
1 like 0 dislike
2 answers 1.0k views
I have a 2002 Toyota Tacoma with engine code P0420, how do I fix it?
asked Mar 21, 2017 by

33.7k questions

32.5k answers

1.3k comments

23.0k users

Need A Repair Shop?
Find local automotive repair shops in your area.
⚠ Check if your car have Safety Recalls

Related Information

- Car TSB
- Car Recalls
- Car Common Problems
- Car Safety Rating
- Car Technical Articles
- OBDII FAQ
- OBDII Components
- 2024 Cars MPG

All OBDII Codes

- Top 25 Codes
- Latest Codes
- All OBDII Codes
- Powertrain (P) Codes
- Network (U) Codes
- Body (B) Codes
- Chassis (C) Codes
Powered by Question2Answer
...