Work sequence

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Start output Diagnostic Test Mode and activate camshaft adjustment valve.

Indicated on display

Output Diagnostic Test Mode →
Camshaft timing control

This valve is actuated (clicks) for approx. 1 minute if → key is not pressed beforehand to select next control element.

If valve is not actuated (does not click):

Check internal resistance of valve.