So last night my check engine light went on I checked the code this morning and I got two codes but they were the same for the cam position sensor on bank a. So i went out and bought a new one and replaced it now it seems like theres a bird under my head squealing. The sound may have been there before but I listen to my music pretty loud so I'm not sure. I read this could be my synchro but I did not get a code for this. Thanks