Well guys this is a topic that everyone ask. But I have done some research and i just want to get some clarification. So I checked my secondary oxygen sensor for ohms and it read between 10-40 ohms like it should. So i checked my connector (female) for voltage and it read .04v so im not sure if thats correct... so i took it as it had voltage going to my o2. Then my last step i checked the ecu pins on my connecter A for A5 and A6 for continuity and it didn't show any continuity on ohms... so not sure if i don't have a good ground or is my ecu bad... i know this may seem a little vague... but please work with me...