I have a question about a code on my F150 4.2 L 2000 Year im getting a code of 0171 i have replaced both of my O2sencers and am still getting the same code Can any help before i go broke on sensers

 

a p0171 is a lean code.......it is not the o2 sensor........i think it is the passenger side....look for a vacuum leak on that side of the engine

 

Thanks Do you know of a good quality code reader

 

tha actrons are good........I have a codekey that i got at costcos for $20.........look for a broken or cracked vauum line on the passengers side ..........if you got a lean code for the other side also.you would suspect a MAF or fuel issue........but with just one code vacuum is most likely