What is the wire color codes for a 2003 nissan frontier o2 sensor harness?

SOURCE: location of a o2 sensor 2001 nissan maxima

bank 1 refers to the side of the engine that #1 cylinder is on , and sensor 2 refers to downstream , after the catalytic converter. , this link shows bank 1 on a 2001 nissan maxima V6 being on the firewall side . if you had a 4 cylinder it would be downstream after the catalytic converter .

http://www.autozone.com/N,26200242/shopping/specsSelect.htm

Marvin

• 85242 Answers
• Posted on Oct 30, 2009

SOURCE: Where is the knock sensor located on a 2003 nissan

It is located on the engine block itself in the valley between the cylinder heads. The entire intake manifold has to come off to access it:

Testimonial: "I am well satisfied with the quick response and information. Chuck"

ZJ Limited

• 17989 Answers
• Posted on Dec 28, 2009

SOURCE: How do I replace my rear O2 Sensor on my Nissan

In here can find the procedure about O2 sensor replacement: Bosch Universal O2 Sensor Installation Instructions

And here someone images about one typical change O2

Good luck.

SOURCE: 1996 Nissan Maxima o2 Sensor Location

check out www.maxima.org

SOURCE: I have a 2003 Nissan Sentra SE-R Spec V. o2 sensor location?!?1

theres always one on the intake manifold working its way down to catalytic convertor is the oxygen sensor 1 heater circuit(pre cat conv) signal while terminal #25 is oxygen sensor 2 heater circuit (post cat conv)