always reset CEL first before - just a simple way to ensure it isn't a fluke

 

May be trying the Bosch . Looks like it splice and not solder

 

My check engine light is on and reads bank 1 sensor 1. I got an OEM sensor from Infiniti and had a buddy replace it for me. We cleared the code but it came back on after 10 miles. So, I had Infiniti warranty the part because I figured it was defective. After replacing the sensor for a second time and clearing ecu, light came back on.

So, I went to the dealer for a diagnostic and they said it could be a wiring problem. They would have to work through the whole system to figure out. Could take 3 hours and they charge 140/hr.

If anyone else has had this problem or advice on what to do, it would be greatly appreciated.

 

so my check engine light went on three weeks ago in my 03 g35 and barley yesterday it started smelling like burn rubber and I looked underneath my car and their was some sensor wire hanging off, the wires are between the catalytic converter and the engine. so I was wondering if that's cause of the burning rubber smell confused confused2: and if it is what kind of sensor wires are they. may I plz get some answers, I would appreciate it a lot,

 

Those probably go to the O2 sensor that's in the cat and they could be the source of your smell.