check engine light code 171 running lean on my o4 honda accord.?

[aray176]

my engine light is on code 171 is comming on. i guess its running lean .can anyone suggest what may be wrong and how may i fix it. the car is 4 cyl.

 

[DavidB]

replace the O2 sensor and your problem is solved.

 

[RonnieWrench1]

You have a vacuum leak. Or worst a bad o2 sensor