Have a 1998 dodge dakota. took it to auto zone because check engine light was on. ran the check and said it was the o2 sensor. first off, is it bad to drive the truck with a bad o2 sensor? Also I was led to believe there was more than one o2 sensor on the truck? Is that correct? If so how do I know which one needs to be replaced.

Thanks guy ahead of time.

 

if you can give us the code we can tell you which one is bad. turn your key to the run position 3 times and keep it in the on pos on the 3rd time, it will give you a p code in the odometer.

 

the code i got from autozone was P0138. i also believe it says bank 1 sensor 2. im pretty sure there are only two sensors on my truck. do i need to change the one before or after my catalytic converter??

 

They are like $100 for the pair at this site,I bought both of them and they screw right in,no need for welding them in http://www.ngk.com/default.asp