Test Point 18 - Intake System Leaks

TEST POINT 18: Intake system leaks

- Check all connections after the air mass sensor for tightness and freedom from leaks.




- Attach special tool 9264/1 to the air mass sensor with M 4 x 45 mm bolts and build up a pressure of 0.3 bar (4.4 psi). If there are any leaks, pressure will drop in the intake system or air will be heard escaping..

NOTE: On cars with oxygen regulator, flashing fault code 1_23 (oxygen regulator at rich stop) appears if there are severe leaks in the intake system (for example the intake pipe gasket).