Code P0327 when engine is cold?
 

Hi All

I’m getting code P0327 when my R56 N14 cooper S engine is cold.When the engine is warm I can erase the code and it won’t return until the next cold start.

I’m not sure if the standard rattling noise at cold starts has gotten worse, maybe.
Or can it be that the sensor might be loose? And the hot engine expanding the metal is enough to make it work again?
Do you recommend trying to fasten the sensor first or just drive it to the mechanic and get a new sensor installed?