My car throws code 1 which is defective circuit or unplugged / defective sensor. I replaced the o2 sensor with one of those bosch universal ones and im pretty sure i wired it right. I cleared the code and it went away for awhile. Then it came back like a few days later. I checked the wires and they seemed okay so i cleared the code again. And then today it came on again. Does anyone know what could be wrong?