Actuating Intake Manifold Change -Over Valve -N156-

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 Audi S8, 2003 Audi A8, 2002 Audi S8, 2002 Audi A8, and 2001 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Press --> button.

Indicated on display

Fig 1: VAG1551 Scan Tool Display - Output Diagnostic Test Mode: Engine Codes AUX, AKB (Intake Manifold Change -Over Valve -N156-)

Courtesy of AUDI OF AMERICA, INC.

The valve must click.

If the valve is not actuated (does not click):

Check Intake Manifold Change-Over Valve -N156-. See INTAKE MANIFOLD CHANGE-OVER, CHECKING (A8 VEHICLES) .