System check
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the compressed air connections from the leak diagnostic pump (LDP). Listen for or feel if the disconnected hose (A), (the removed hose), is leaking.
Check if there are any other leaks. In the event of any leakage, replace the entire leak diagnostic pump (LDP) as the leakage is internal. See Internal fault. Permanent fault .