I have a 9-3 2006 V6T Automatic and my OBD has pulled two codes P00016 & P00018 both related to camshaft position sensor correlation. At first I was very worried it could be a stretched timing chain, I've recently discovered that the VVT Solenoid can go bad from dirty oil. My oil was black from previous owners neglect. Can anyone advise the exact location of the VVT Solenoid? And if there are more than one? Unfortunately there is no information online for the B284 engines.