Engine codes 2002 liberty limited 3.7

[Newman]

I just picked up this liberty cheap last night the check engine light is on has 3 codes p0159 02 b2 s2 slow response p0174 fuel system lean bank 2 and p0153 02 b2 s1 slow response i am thinking injector or intake gasket runs rough at idle seems to clear up under power any thoughts?

 

[Gyro]

FSM says 159 and 153 cause 174.
Replace both O2 sensors on bank 2(passenger side)should fix 174.
Use NTK sensors.

Gyro

 

[Royy]

Before replacing the O2 sensors, one thing you might want to do is to verify your catalytic converter for that bank is working properly. A bad cat can really mess with the O2 sensor readings, making it seem like the sensors are the issue.

 

[tommudd]

Depending on miles, just replace all 4, like anything else sensors get weaker, so having all 4 new would be much better than running around with one new sock on and one holey one

 

[Newman]

Thanks for the help guys it has 199000 miles on it and runs really rough at idle almost seems like a miss but clears up under power I will start with o2 sensors I couldn't pass it up I got it to drive back and forth to work has brand new tires on it some minor cosmetic stuff and check engine light on picked it up for $1200 drives smooth down the road no rattles steering is tight