P0505 Empowering Drivers with Idle Air Control System Troubleshooting Expertise

1st- I believe the IACV is shorting due to it overheating. Both bad IACV's showed no signs of deterioration in the coolant channels, just bad impedance ... 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. That doesn't mean that the P0505 error code is caused only by the failure of the idle air controller. Want to erase your check engine light and fix your P0505 ... This code which states IAC fault, there is no idle air control valve, no idle speed controller, or EGR system. How to fix a P0505 engine code: Idle Control System. A P0505 code is set when the computer detects the engine RPMs at Idle are erratic. P0505 means an irregular voltage detected in any IAC circuit. Our expert mobile mechanics can diagnose and fix your P0505 trouble code wherever you are. P0505 code definition Idle Control System Malfunction What the P0505 code means P0505 is an OBD-II generic code that the engine control module (ECM) ... I own a 2001 Cherokee Sport. Recently I've been having an issue with my RPM at idle. It surges anywhere from as low as 300 RPM to as high as 1400 RPM. 95.5-2004 Tacomas & 96-2002 4Runners - Code P0505 - Well guys, I just came back from AutoZone and found an error code of P0505: Idle Air ... 2004 Toyota Matrix XR with only 111000 miles.