cam position sensor troubles

[92gsr]

Hi guys my evo 4 rs is not running the best, it is like hesitating/missing when accelerating and wont start when hot so iv cheaked for any fault codes and theres code 23 witch is the cam position sensor, does that sound right?? :unsure: also iv pulled the sensor out and its covered in oil, is that normal or is there a seal that needs replacing. Any help is greatly appreciated cheers.