Hey there. So my truck coded out. Its sayin that I'm running lean, and something about my fuel cell stuff. I havent checked my plugs yet cause I dont have the spark plug socket. I have no idea where to start checking for the sensors. Im told i have anywhere from 2-6 on my truck. It's a 2003 2x4 4.2 v6. Im also not sure how to tell which sensor is bad or if its even the sensor thats makin my truck code. ANY help will be grately appreciated. thank you!

 

What code? Post the numbers.

 

Calm down and don't resort to part swapping.

You probably are part of what seems to be a rash of P0171/P0174's coming from cracked PCV valve hose elbows...

But, if you don't have the above codes on your end, post them for us.