my 2006 s40 2.4 non turbo is setting a check engine light.scanner shows po171 code,lean on #1 cyl. can anyone make suggestions as to what might cause this?

 

no ideas,anyone?how can i diagnose this problem?the car seems to run fine,even with check engine light on,i have reset the light,but it returns shortly.my only thought is a fuel injector partially blocked

 

One of the BEST diagnostic and troubleshooting videos I have ever seen. Thouroughly and easy to understand explanation of potential problems, causes and fixes for the P1071 code.



Tutuapp 9Apps

 

[QUOTE=dhsyu;538210]One of the BEST diagnostic and troubleshooting videos I have ever seen. Thouroughly and easy to understand explanation of potential problems, causes and fixes for the P1071 cod
excited by your reply,so far unable to find video,not a computer friendly person