like the title says, I wanted to know for sure OBD2 civic. secondary sensor, not primary.

Thanks!

 

Wondering the same thing.

 

mine comes on every other day or so and the car seems to idle better with the CEL on. everytime i pull the code, it's for the secondary 02 which doesn't exist as i have a simulator in place of it, i know I need to replace the simulator soon so it doesn't trip the CEL anymore but just wondering if it goes into limp mode whenever the CEL comes on, or only for things that can effect engine health?

pump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ToasterOven &raquo;</TD></TR><TR><TD CLASS="quote">mine comes on every other day or so and the car seems to idle better with the CEL on. everytime i pull the code, it's for the secondary 02 which doesn't exist as i have a simulator in place of it, i know I need to replace the simulator soon so it doesn't trip the CEL anymore but just wondering if it goes into limp mode whenever the CEL comes on, or only for things that can effect engine health?

pump</TD></TR></TABLE> Nope it doesnt. It will do it to protect the engine. My freinds O2 is bad, and has a CEL and runs fine.

 

my cel is on for that reason and im running lean as hell now... anyone kno how 2 fix it

 

the second o2 sensor willnot put your car in limp mode(sp)... the check engine light will just come on telling you to change out the sensor.

 

The only thing that the second 02 dose is moniter the kat. the reason why u would wont a simuleted 02 is if you had no kat then it would lie to your ECU and tell it that everything is fine.The only 02 that has an input is the first one, witch determins your fuel trim.