P0461 OBD Code/Fuel Level Sensor

Senshi

I searched for this code and didn't pull anything up. So sorry if this is extensively covered. I just had a service engine soon light pop on today so I put the handy old reader on it and it gave me a P0461 code. I looked it up and it says "Fuel level sensor circuit range/performance. Fuel level sensor A electrical circuit was out of its operating range or had a performance problem for a predetermined period of time. So I went to the local Nissan thieves I mean dealership and went ahead and ordered a sensor. $200 for the sensor and tank gasket which will be here tomorrow. But, it light went off before I got home (about 10 miles). Should I go ahead and pay and replace the sensor or is there another option? And, which sensor would sensor "A" be? I know there is 2.