× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1509 Diagnostic Trouble Code Discussion for October 2009

Idle Speed High - IAC System Not Responding

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1509
Help Request Posted
1998 Honda Civic EX 1.6L Poor Idle Quality, Surge VIN: 1HGEJ8255W
P1509: Idle Air Control System High RPM. I can't clear this light. When the key is in the on position the light will come back on. The circuit is not open and the idle is smooth when the iac is unpluged. I the replaced with a used with on fix. I have then sent to Honda and was told to replace with th...
October 15, 2009