I just swaped a B16 into my 89 crx. I its throwing a code 2, witch I think is the secondary O2 sensor, and I was wondering if there is a difference between the primary and the secondary, or if they are the same. And what one would I go buy, like for what car would I tell them I need it for??

Thanx

 

The b16a uses two one wire oxygen sensors. You can get them from any pre-92 honda or acura. You can also get universal one wire O2 sensors and wire them to your existing plugs.

 

just go to the local shop and tell them you need a universal 1 wire o2 sensor, that'll work for ya