Ok i got a b16 in a 92 hatchback and I kept throwing CEL #1 so i got a new sensor but i got it for free and they said it was from a single cam well after a few days it went out and that was a brand new sensor. I got O2 problems when i got headers. Anyone have any input? Are dohc and sohc cam 02 different?

 

bump

 

the O2 sensor has to match the ECU not the engine.
Since you have a 92 I'm betting you have a chipped P28 or a P30. A SOHC four-wire O2 is fine.

if you keep having O2 issues like this it's time to check out your wiring. faulty connections or intermitent shorting will cause problems quickly.

 

yeah i have a chipped pr4 its tuned by a friend/shop but it doesnt always throw the code mostly does it when i down shift.

 

sounds like a connection problem to me.

 

i got the same problem with the header thing, i have a 2000 si...when i changed from stock to dc-sports 4-1headers my engine check light came on and still is on for liek months now. they said its my o2sensor tellin me i need a new one. everysince then i been gettin bad gas milage compared to stock headers.......

 

your bad gas mileage is from the ECU being in limp home mode due to the O2 CEL, not from the header.

Removing an O2 sensor from one header and installing it into another can damage a weak O2 sensor. If you're positive your wiring is good, replace the sensor and you should be CEL free.

 

yeah i think i need a b series o2 also my car is hesitating under 4000 rpm's it started doing this **** once the CEL has been around, other then that im gunna check my timing.