Northstar Engines and System Technical Discussion Discussion, 01 deville o2's locations? in Cadillac Engine Discussion; I tried doing a search,but came up with nothing.I need to know were the o2 sensors are located.Its a 01 ...
Automobile(s): 2002.5 F55 STS, 2014 Explorer XLT 4WD
MD Eastern Shore
Re: 01 deville o2's locations?
What code are you getting that makes you think an O2 sensor is bad ?? Many times, a vacuum leak will trigger a sensor efficiency or "bank lean" code. The Northstar O2 sensors are usually problem-free themselves. Not saying that is your case, but post the codes so we can dig deeper and maybe save you some time and money.
Yes, right bank sensor is B1 S1. Look at the picture title line.