SPONSORED LINKS

2004 Honda Civic OBD II P2000 and CEL on Civic Hybrid

Tiny
SOYTREJO
  • MEMBER
  • 2004 HONDA CIVIC
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 103,000 MILES
Car running great, but getting persistent CEL that has reset on own a couple of times. I have found that this code can mean "NOx Trap Efficiency Below Threshold (Bank1)" which seems to be associated with O2 sensor in some posts but then in others seems to be associated with bad catalytic converter and I have even found it associated with the rechargeable battery? Help! Thanks in advance.
SPONSORED LINKS
Sunday, January 11th, 2009 AT 8:44 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello
Thanks for the donation.

This code usually indicates a faulty oxygen sensor(s). However, in some instances it can also be used for a faulty catalytic converter as well, since the O2 sensors are located on the exhaust system along with the cat. converter(s). You should check out the following link to test your oxygen sensors before replacing anything.

https://www.2carpros.com/how_to/how_to_test_oxygen_sensor.htm

If the tests come out good then faulty cat. converter is the issue.

Hope this helps..
Thanks for using 2carpros.com!
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, May 19th, 2021 AT 1:38 PM

Please login or register to post a reply.

Related Check Engine Light Reset Content

VIEW MORE

Sponsored links