Auxiliary Air Control (AAC) Valve System Test
WARNING: This page is about a different car, the 1996 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Faults in auxiliary air control valve system may set Code 25 or DTC P0505. If necessary, check for stored codes. See RETRIEVING CODES in the TESTS W/CODES article.