Hi guys,
Got a little trouble and hope you could offer some insight. Car has been running rough latley, stalling when cold, some hesitation, and just thru a code P0171 . Was hoping someone could offer suggestions before I have to take it to the stealership errr...., dealership. Thanks

 

http://www.autotap.com/codes.asp

description : Fuel Trim System Lean Bank 1

I dont have factory service manual with me at this moment. Few things that I remembered from the FSM:

1.dirty fuel injector
2.faulty O2 sensor
3.MAF sensor
4.intake air leak after MAF sensor
5.dirty air filter


you can check no.4 and 5 by yourself. you can do no. 1 by adding a bottle of fuel injector cleaner (i.e. BK44)

O2 sensors has to be checked with advance scantool or consult II. MAF sensor can be checked with a multi meter.


good luck.

 

I had this code and many others did .... I made a post about it but cant find it because i dont have search function.

anyways I had the Maf sensor replaced and it fixed the problem. Also replaced the battery because my stereo system was draining it down{unrelated}