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Home >> BMW >> 2008 >> 323i Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 893 (Self Diagnosis - Theory & Operation (S85)) >> Variable Camshaft (VANOS) including Camshaft and Crankshaft Sensor >> Variable Camshaft (VANOS) >> Pressure detection >> Diagnostic Overview

Diagnostic Overview

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The pressure test runs after each engine start.

The control valves of the inlet camshaft are activated in such a manner that it should move in the opposite direction, with respect to its direction of rotation. If no sufficient change in the opposite direction is detected, within a temperature dependent time, a fault code is stored.