Emissions

[BBS4]

I currently have one O2 sensor out (bank 1, sensor 1) and the check engine light comes on for about 50 miles and goes out for about 150. My question is will it pass emissions when the check engine light is off or will i have to replace the O2 sensor?

[BurnAll4S4]

you wont pass. the code will immediately (or very shortly after) go into the ecu as a pending DTC and just needs to pass a couple drive cycles before it reappears as a present DTC.