I'm a bit confused at the moment. I have an intermitant fault code showing on my zafira B. The code is ECN 017011 and I'm not fully sure what the error is. I initially believed that it was the pre cat O2 sensor based on info I found on here, however I'm not entirely sure. Before I start buying bits for the hell of it does anyone have any suggestions as to what it might be especially as it isn't there all the time. It was also suggested to ma that it could be me exhaust blowing at the front somewhere.
Any help would be appreciated as I'm getting more confused by the day.