UNOCAM

Ok i have a 03 is300 135k miles right now its throwing code p0012 (intake camshaft position timing-over retarded bank 1) i have verified the timing everything is on point. I have also just done a oil change 5-30 mobile 1. I just replaced the OCV (oil control valve) and test its circut i didnt know the exact voltage but its reading power. Next i cleaned out the OCV filter it was completely dirty, but it is now perfectly cleaned up. My next thought is the VVTI cam gear? I dont think its the ECM it doesnt misfire it drives perfectly fine. Can someone please help me get rid of this damn code already. Thanks