ok so i have a CEL on and i went to autozone for a free diagnosis and the guy said it wuz emissions related and it could b either my o2 sensor or my catalytic converter.. how do i figure out which one is the problem so i can get it fixed?

 

obd 1/2?

 

what CEL # are you throwing.

the guy at autozone has no clue.

platinum.

 

i dont know if its obd 1/2? how do i figure that out
its a 1997 civic dx if that helps

 

yea i figured the guy at autozone wuz jus as clueless as me lol but i dont kno the number i cant remember wut the readout said

 

obd 2. need to know ho2s1, or ho2s2, first or second sensor. if 1 is bad probably just the sensor. if 2 is bad could be cat or sensor 2, probably the cat.