Running Lean in Bank 1

[Socom688]

My truck threw the code "P0171" and said running lean 1, which I assume means bank 1. What exactly does this mean? Is it just a bad o2 sensor? Thanks in advanced.:beer:

 

[SilvieBolt]

Yes First check ALL your vacuum lines seriously......than swap your driverside o2 sensor with your pass. side and see if the code changes. If so....theres your problem. Sensors are pretty expensive. I went through this myself.

 

[Scuba-Matt]

yes first check all your vacuum lines seriously......than swap your driverside o2 sensor with your pass. Side and see if the code changes. If so....theres your problem. Sensors are pretty expensive. I went through this myself.

+1

 

[Socom688]

thanks guys. Yea, I figured it was just a bad o2 sensor because I have a custom SCT tune. Also, my fuel pressure gauge is reading normal, so its gotta be a bad sensor. :kaboom:

 

["olsson"]

thanks guys. Yea, I figured it was just a bad o2 sensor because I have a custom SCT tune. Also, my fuel pressure gauge is reading normal, so its gotta be a bad sensor. :kaboom:

Dont rule out a vac leak, it could still be one :thumbsup: