Hi I’m new on here and I just recently got my 350z , but I am trying to clear my engine light and I’ve run into and issue . I put my obd reader and the code I got was p0037 , bank 1 sensor 2 o2 sensor , went and purchased one ,brand is Valker. I replaced the sensor and cleared the code , drove it light came back on , I’ve been stuck and unable to smog my car , helpp!

 

Did you replace the right sensor?( Bank 1 is the passenger side) Some people mistake Bank 1 for the driver side.

 

More importantly, the ECM in your car is continuously scanning for problems. Bu erasing the code and having it pop up again usually means there's a problem you have not adequately addressed.