well i have a cel light in my 99 civic lx. its the o2 sensor. well here is my question. how do i tell which one it is. car is hesitant when cold. thats all though. went to discount and got the diagnosis. well they told me that the 2 o2 sensore are the same. i have heard that they are differnet. is this true also? if not then i will buy one and do the trial and error thing. please help
thanx

 

what code are you throwing?

 

if you have code 1 is the primary if you have code 2 is the secondary

platinum.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by platinum00 &raquo;</TD></TR><TR><TD CLASS="quote">if you have code 1 is the primary if you have code 2 is the secondary</TD></TR></TABLE>

This kid is on the ball.

 

except it wont be a code 1 or code II since it is OBD2.

43 is primary
65 is secondary

The sensors can be swapped. If you had autozone run the diagnostic, they should be able to give you the "official" error code which would be:

P0135 (primary)
P0141 (secondary)

The code reader wont give you the same code as a CEL would.

With either code, you can replace that sensor. While it wouldnt be hard to use trial and error, why waste all that time swapping sensors when you can just use the code and fix the right sensor the first time

 

^^ great information.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by specv5150 &raquo;</TD></TR><TR><TD CLASS="quote">except it wont be a code 1 or code II since it is OBD2.

43 is primary
65 is secondary

The sensors can be swapped. If you had autozone run the diagnostic, they should be able to give you the "official" error code which would be:

P0135 (primary)
P0141 (secondary)

The code reader wont give you the same code as a CEL would.

With either code, you can replace that sensor. While it wouldnt be hard to use trial and error, why waste all that time swapping sensors when you can just use the code and fix the right sensor the first time</TD></TR></TABLE>
than bro. very useful. im gonna go back and have them scan it again and tell me what the code was # wise.

also are the 2 o2 sensors the same or different?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jay-tec &raquo;</TD></TR><TR><TD CLASS="quote">than bro. very useful. im gonna go back and have them scan it again and tell me what the code was # wise.

also are the 2 o2 sensors the same or different?</TD></TR></TABLE>

I have personally used a "secondary" oxygen sensor as a primary with no issues. I want to say it is a different part # though. I am not sure, but I thought I saw two different part numbers listed on HT before when someone asked. I knew mine was a secondary because I pulled it from its secondary position and used it as a primary

 

good ketch specv5150....

The primary and secondary are different part numbers normaly, but i would not get a factory replacement either way. Just get a universal or the ones from sparkplugs.com

http://www.sparkplugs.com

NGK OE identical O2 sensor 24172 FRONT $49.85
NGK Universal O2 Sensor 29415 FRONT $29.85
NGK OE identical O2 sensor 24172 REAR $49.85
NGK Universal O2 Sensor 29415 REAR $29.85

platinum.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by platinum00 &raquo;</TD></TR><TR><TD CLASS="quote">good ketch specv5150....

The primary and secondary are different part numbers normaly, but i would not get a factory replacement either way. Just get a universal or the ones from sparkplugs.com

http://www.sparkplugs.com

NGK OE identical O2 sensor 24172 FRONT $49.85
NGK Universal O2 Sensor 29415 FRONT $29.85
NGK OE identical O2 sensor 24172 REAR $49.85
NGK Universal O2 Sensor 29415 REAR $29.85

platinum.
</TD></TR></TABLE>

 

cool thanx guys. sounds like i will be goin there. i appreceate everyones help on this.