P0505 Code - Idle Control System Malfunction. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.. P0505 Honda Idle Air Control Valve.. Frequently Asked Questions about P0505 Honda Code 1. What are the common symptoms of OBDII code P0505 in a Honda related to the Idle Air Control Valve? Symptoms include erratic or high idling, stalling when coming to a stop, and potential difficulty starting the vehicle. 2.
Honda P0505 DTC Description: This system automatically controls engine idle speed to a specified level. Idle speed is controlled through fine adjustment of the amount of air which by-passes the throttle valve via Idle Air Control Valve IACV) and Auxiliary Air Control AAC) Valve. The IACV-AAC valve changes the opening of the air by-pass passage.. Code p0505 is reported when I scan the engine. When I reset it, it comes back within 30 minutes, whether or not the idle has been surging.. Inc. Content on crvownersclub.com is generated by its users. crvownersclub.com is not in any way affiliated with Honda Motor Company VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V.