p0411 fault present
 

good evening
I recently stored my ap2 about 3-4 weeks ago and I turned it on this morning and the check engine light came on I scanned it and I got fault code p0411 ikon its a secondary air issue. I checked for vacuum leaks and felt around but didn't fine anything. vehicle running fine. is there a way to diagnose the system. I will greatly appreciated if I can get feedback thanks you