Hi, first time poster, car novice, having issues with my 2010 IQ auto transmission. Driving along the other week and the engine light came on along with the traction control light, plugged in code reader and it stated 'P0138 O2 Sensor Circuit High Voltage Bank 1 Sensor 2', have had the sensor changed at a garage, drove a couple of days and the light reappeared, back to garage where they gave it a service, again drove a couple of days and the lights reappeared. The car appears to run fi