Will bad o2 sensors cause a p0154 code or could it be something else? I just dont want to spend $100 on o2 sensors and that not be the problem.

 

I would say replace them... read this
http://web.camaross.com/forums/showt...ighlight=p0154

they are only $35/ea from dal or jason I think

 

Im not sure, but how many miles does your car have on it? I know that you can get a set of 2 at AutoZone that are made by Bosch for 55$. If your car has many miles on it, it would probably be a good idea to replace them anyways. I hear that they are a usual problem when bad gas mileage occurs as the miles pile up. So a new set of O2s could be a wise investment. Im changing mine next weekend.

 

Yea If the car has lot of milleage I would say replace them. Also DON"T GET BOSCH O2 sensors. They are crap. Having problems with mine that were changes less then 2k ago. Get Ac Delco one's.