DTC P0505: Idle Speed Control System: Notes
WARNING: This page is about a different car, the 2002 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If DTC P0120, P1122 or P1123 is also set, perform diagnosis for those DTCs first.
NOTE:
Before performing diagnostic procedure, follow testing procedure. See TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM.