P0505 The Ultimate Resource for Idle Air Control System Troubleshooting and Repair

This code happens when the actual idle speed varies from the target idling speed by more than 200 rpm, for five times or more during a drive cycle. This code comes on for two conditions. When the idle speed isn't the specified amount or a learned value of the idle speed control remains the maximum or ... The P0505 code can be caused by a faulty idle air control valve, vacuum leak, damaged wires or connectors, an idle speed that isn't calibrated, ... Claim your FREE engine code eraser https://free.nonda.co ============================= nonda Auto DIY Center is the biggest auto DIY ... 2004 Toyota Matrix XR with only 111000 miles. Detailed information on troubleshooting and repairing a P0505 DTC code which refers to a malfunction of the IAC (Idle Air Control) system. The ECM operates only the IAC valve to perform idle–up and provide feedback for the target idling speed. DTC No. DTC Detecting Condition. Trouble Area. P0505. The ECM operates only the IAC valve to perform idle–up and provide feedback for the target idling speed. DTC No. DTC Detection Condition. Trouble Area. P0505. The truck doesn't want to idle at start up so I have to give it a little throttle for a few seconds - maybe 10 seconds or so then it idles and drives fine. I have a code P0505 for the idle air control system. Truck idles at about 1500 RPM and you can hear a sucking noise from the trottle body where the IAC goes in.