So i got my car running tonight... and it randomly threw a code one, which is for the o2 sensor. i thought this was odd, since my o2 sensor has maybe 10 miles on it.

so i was wondering, could an exhaust leak at the joint where the manifold meets the down pipe cause the CEL?

how about using an o2 sensor for a d15 on 1.6l parts?

 

sadness, nobody knows? i guess i'll just have to fix my exhaust leak and then find out, eh?

 

it could be possible, because the 02 sensor is reading that its not getting any oxygen due to it escaping throught that leak.

 

mine does the same thing and i have no exhaust leaks.. mine pops on and shows code one when my engine is warm and i downshift. they are all the same for d16 and d16 obd0 they only change for obd1 and obd2 i the same as obd1 i believe..

 

it could be wiring or a bad sensor, i'm not sure about an exhaust leak causing this, it would have to be a big leak.
Is the o2 sensor a bosch. i've hear alot of complaints about them going bad fast, like in 10 miles.

 

no i don't think it's bosch... does it make a difference if it's a 1.5l sensor or a 1.6l?

 

i dont think it matters. my friend is running an o2 sensor off of an a6 on his b2.
and it doesn't throw any codes.

 

it doesnt matter they are the same o2 sensors. but mine threw the same code on my ls swap. i was running it on a pm6, turned out that it was the ecu. changed to another pm6 and it stopped throwing the code.