I have an 01' Type-R but I have a little problem. My car is throwing a code 63 which is no heater for the 2nd o2 sensor. Ive replace the sensor and taken the negetive off the terminal but the CEL came back. The wires arnt cut anywhere and look good. Any reason why the code is still popping up? Could it be something else that has caused it to light? Any help is appreciated.

Edit: Thread title was supposed to read Never ending CEL lol