I have just bought a Subaru Impreza wrx sti 330s and all was well until the engine light came on along with the cruise control and sport mode flashing and the traction control being turned off, I plugged in a diagnostic kit and found that the O2 sensor had an issue (bank 1 sensor 1) so I replaced the sensor for a new one and deleted the fault code, how ever the same fault is still showing up, anyone have a clue of anything else it can be?