Nissan Altima cat conv.

2002 NISSAN ALTIMA
Avatar
TPHILIPPS1
  • MEMBER
  • 1 POST
What exactly is a bank 1 cat conv on a 2002 nissan altima 3.5 SE ?
Feb 1, 2011 at 9:12 PM
Advertisement
Avatar
BLUELIGHTNIN6
  • CAR REPAIR CONTRIBUTOR
  • 16,542 POSTS
A catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. The code will trigger the Check Engine light if the readings of the two sensors are similar. This indicates that the converter is not working as efficiently as it should be.
Feb 6, 2011 at 12:19 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.