ok i my catalytic converter is bad and i need a new one. my car is obdii and what i need to know is does it matter,will the check engine light stay on, if i have to oxygen sensor in it anymore or not.

thanks in advance.

 

proper grammar would help first


and yes the check engine light will still be on, if the o2 sensor is removed or unplugged (maybe not for a p0420 code, but for a rear o2 sensor instead)
either way the light is still on

 

thanks and sorry i was in a rush.

 

try not to rush next time