Intake manifold change-over valve -N156-, activating

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Indicated on display:

Fig 1: VAG1551 Scan Tool Display - Output Diagnostic Test Mode: Engine Code AYS (Intake Manifold Change-Over Valve -N156-)
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Solenoid valve must click.

If the solenoid valve is not activated (does not click):.

Check intake manifold change -over valve -N156-.