P0390 - P0393 Code on 2007 IS250
 

A friend has a 2007 IS250 that has a check engine light and had a code P0390. We found that to be a cam position sensor code and swapped two of the cam sensors (A side Intake with B side exhaust) and now it shows a P0393 code. We swapped the sensors again and still have a P0393 code. Has anyone had a similar problem?

Thanks,

Bill