P0171 System Too Lean (bank 1)
#1
P0171 System Too Lean (bank 1)
While driving today i get a cel so i stoped at the autozone to scan it and see what up with that so i get P0171 System Too Lean (bank 1) car runs fine no problems. I checked tho hose to see any crack but i dont see anything. Any advise where should i start? also i did do research on this.
#3
when its MAF or O2 sensor it does not show which one is it?
I did check it again reset the Cel Light but still came up.
I did check it again reset the Cel Light but still came up.
#4
I'm having the exact same issue on my 02 1.8tqm. Runs fine, new PCV, new fuel filter. No detectable vac leaks and no change when I disconnected the MAF and took it for a run.
It idles flawlessly and doesn't seem to be down any power at all.
I'm lost.
It idles flawlessly and doesn't seem to be down any power at all.
I'm lost.
#5
you can welcome another P0171 member here.
had 2 codes so I replaced PRV and now only P0171 is left. I have no boost gauge yet so cant see if its vac or maf or o2
car seem to run ok for now but I feel that its somewhat underpowered and gas milage could be better.
had 2 codes so I replaced PRV and now only P0171 is left. I have no boost gauge yet so cant see if its vac or maf or o2
car seem to run ok for now but I feel that its somewhat underpowered and gas milage could be better.
#9
Yes i did, i was getting air in the system from the maf, my intake silicone had pop out which was causing the problem. i did a vacuum test and found air coming in.
Do check all your vacuum lines vic_13 just to make sure is not that and then check maf and o2 sensor
Do check all your vacuum lines vic_13 just to make sure is not that and then check maf and o2 sensor
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