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Notes:
- Intake and Exhaust camshaft tests are separate so 2 will need to be conducted
- The fault code for VANOS position is > +10 degree's or <- 10 degrees. So you can have a +-5 Degrees error (total 10 ) and the car thinks everything is fine. So imagine 10 degrees off on the intake + 10 degrees off on the exhaust. You have a total of 20 degrees off on your engine timing and the car still thinks everything is ok.
Bimmerprofs covers this very issue in great detail. Looks like this was used to save costs on solenoids during warranty.
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