I've had an issue with this for a month, after my check engine light came on, I chechecked the code I was recommended to change the sensor, after the second sensor the same code keeps coming up, I checked the o2 heater fuse and it's fine, I'll be checking for voltage from and to the sensor, and double check the ground wire, I'm so frustrated I'm considering re-wireing the sensor to the ecm. Any recommendations or anything I'm missing?