07 Equinox

[Stpman]

My daughters Equinox has thrown a few codes

P0171 lean condition
P0137 O2 sensor Rear (this code is also pending)
P2A01 O2 sensor rear

Is it possible that the O2 sensor could be causing the lean condition code P0171?

 

[Stpman]

ok so I replaced the downstream O2 sensor and cleared the codes and it looks like the lean condition was being caused by the bad O2 sensor.

 

[mrvette]

ok so I replaced the downstream O2 sensor and cleared the codes and it looks like the lean condition was being caused by the bad O2 sensor.

Lucky, I have same symptom, dunno about code # though....downstream o2 sensor....changed it, and no diff....light came back on.....

hell with it.....:surrender::mullet: