i just sent my land rover to get smog and it failed it came up with several code can anyone help me with this i would like to solve them myself can't afford a machanic right now; ok ready #PO171 system too lean [bank 1]
PO174system too lean [bank2]
PO102 volume air flow circuit low imput
PO159 02 sensor cicuit slow response[bank2 sensor 1]
Po139 02 sensor circuit slow response [bank1 senor 2]
HELP anyone thanks for everything,Mark

 

Hey Mark, how many miles on her? sounds like 02and MAF sensors. I had these same issues.Bet your gas mileage is crap as well. If these are the problems you can make repairs yourself. still not be cheap. but a whole lot cheaper than a dealer.
gTAGG

 

78.000 miles and my gas milage is BAD

 

What year is your truck??
Most likely your MAF is junk, what air filtewr are you using and how often do you change it.
What octane gas are you using?
Seems a little early for 02's so I would suggest you deal with the lean burn then see how the codes look.

 

It's a 2000 and we bought it around 5 months ago and we use super fuel only the previous owner said he used regular fuel . I just change the filter yesterday, i used a cheap filter they did'nt have the good one in stalk so i had them order me one

 

i was wondering if u got my message i'm new at this

 

when u say try lean burn do u mean super unleaded fuel, sorry to bother u, have a great day Mike

 

I haven't gotten a message from you, call me
303-862-7680
Colorado between 7 am and 8 pm.