can just barely make it to work and back

[keruzam93]

yep thats the one

 

[keruzam93]

Finally got the truck to give me a couple codes, P0131a and P0151a, both upstream O2 sensors low voltage, one of them is brand new , scan tool data stream says both banks are now stuck lean (they were not before) why would the O2 sensors throw a code now after the problem being there for a month? and could this cause the symptoms that im having?

 

[SunlitComet]

both are for low voltage outputs from both front O2 sensors. because you you have both happening at the same time i would suggest damaged grounds, engine is leaning out for some reason like low fuel pressure, a sensor skewing the pcm calculations or a faulty pcm it self. i would reccomend getting your fuel pressure checked to eliminate that as a cause. you can borrow one from autozone. if you have a scanner see if you can get the ect, map, map, rpm and outside temperature jotted down after engine is hot and idling for a minute or two so i can look at the readings.