I have 2002 Nissan pulsar N16 1.8 L sedan. My car doesn't recognize any obd2 sensor. OBD port has power, when I connect OBD sensor it will get power but it won't read or scan anything. My car engine yellow light is on. I have checked and replaced parts but light is still on. Even in workshop they tryed their obd2 scanner but it didn't work. Now I need to know why and which fuse is connected to obd port in Nissan pulsar N16. Please help me to check