Camshaft Position Sensor problems of the 2003 Infiniti M45

Even though fuel gauge shows a full tank of gas the tank was actually empty and I ran out of gas. This was very inconvenient but more importantly could have been very dangerous for every passenger in the car, had I been on the freeway or other roads traveling at a high rate of speed to suddenly be out of gas. One other related issue is the engine service light. Tried to get the vehicle smogged but was told that a few codes came up on the meter. One was camshaft position sensor. One other one showed the fuel sending unit/sensor to be faulty. In regards to this issue, it would seem that just replacing the sending unit may not be a guarantee that the fuel gauge will properly function. Car can not be smogged without these items corrected at high cost. These issues need to be addressed properly from the Infiniti/Nissan company. Thank you.