Hopefully, someone on the forum can give me some guidance on a problem I am having with my daily drive (2002 QX4). The service engine light came on indicating that the bank 2, sensor 2 O2 sensor needed to be replaced. I replaced the sensor, wearing gloves, with no problems with the cable or connection. Now the Service Engine Light is coming on with a P0057 (HO2S Heater control circuit low (Bank 2, Sensor 2). Does anyone have any suggestions on how I should proceed? I will have a scanner on Monday that will allow me to measure/read the different voltages. Thank you for your assistance.

 

Did you replace it with a OEM sensor???, also these Infinitys are having software issues, check with your dealer if any.,
cheers,sonny1.

 

Interesting, the original was a Denso and I replaced it with a Bosch (direct replacement). Do you think that could be the issue?

 

I posted too fast.
Thank you!