2007 997.1 TT - Code P0021?

[Finwiz12000]

New member here.  This is a great site with loads of useful information, so thank you!

 

I recently bought my dream car, finally, a 2007 997.1 turbo with Tip with 27k.  Long story short, I bought the car and had it serviced right before winter.  However, after the service which included an oil change, code P0021 came up for the first time.  I took it back to the dealer and they cleared the code and told me this happens at times after an oil change.   I drove the car for a few more weeks until the weather changed and the CEL light never returned, until yesterday.   Again, because of the weather, the car has been sitting for a few months and I just took the car out.  It ran perfect all-day long.  Then the very next morning, I take the car out and about 5 min into the drive the CEL light comes on with "Visit your local shop" or something to that affect.  My OBD reader indicates Code:  P0021 -  camshaft position over-advanced bank 2.  

 

1 - Should I clear the code and see if the code returns, or should I have someone look further into it? 

2 - I was going to clear the code and see if it comes back like previously noted by the dealer but wanted to acquire some more experienced thoughts on this. 

     Car seems to run, idle, and drive perfectly fine. 

 

  Any thoughts or guidance on what to do next would be greatly appreciated!  

 

Sorry for the long post.  Thanks in advance for you guidance!  

[hans.brodi]

I have the P0021 because the sleeve on the cam shaft is partly rotated and limits the oil flow to the vario-cam system. My error is set when the oil is cold. As soon as it warms up the vario-cam works as expected. Drove like this for 20 000 miles now.
 

So I would say clear the code, drive and see whether it returns with warm oil. If it doesn't - great ... otherwise have a shop look at what is wrong or do it yourself ...