New O2 sensor and getting P0031 code

[Alston518]

2003 350Z. I had a bad o2 sensor (bank 1 sensor 1). I was getting a P0174 code. Went to advanced auto and purchased a BoschPremium Oxygen Sensor with OE SmartLink™. got the old O2 sensor out, and then had to splice the old connector onto the new sensor. I went gray to gray, black to black, and then had 2 white wires (heater wires), and was told that the white wires are the same and it didnt matter which white wire went to which white wire. So i did that. Got it all together and put it back in. I cleared the code and took it for a drive. After a while the service engine light came back on. Cleared it again and it still came back. I am getting code P0031. Is there anything I may have done wrong? I was think maybe I make the wires too long and the resistance may be too high. How can I test this? Thanks

[evildky]

There are 2 oxygen sensors, I believe that code refers to bank 1 which would be the passanger side, which one did you replace?

[Alston518]

There are 2 oxygen sensors, I believe that code refers to bank 1 which would be the passanger side, which one did you replace?

yeah there are 4 sensors total. The guy at advanced auto it was reading bank 1 sensor 1. But if you are saying bank 1 is the passanger side then i screwed up. Are you positive about that? I thought bank 1 was the drivers side?? Also, any chance you know what gage the wires are on the O2 sensor?

[evildky]

Forgot about the sensors on the manifolds. So it's the sensor int he passenger side manifold. Yes cylinder 1 is passanger side making it bank 1.

[Alston518]

Forgot about the sensors on the manifolds. So it's the sensor int he passenger side manifold. Yes cylinder 1 is passanger side making it bank 1.

Thanks!