Empower Your Vehicle P0505 - The Essential Guide to Idle Air Control System Repairs

P0505 can be caused by not only a bad IACV but also a vacuum leak, misadjusted idle speed, bad ECT sensor/circuit, or bad TPS sensor/circuit. 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 ... It starts right up and idles ~800, perfectly smooth and even. the longer it runs the higher the idle gets, up to around 1100 (900 with AC on) when fully warm. It seems that the hose doesn't want to stay fully engaged and keeps cocking a bit. I'll pickup a hose clamp tomorrow to help secure the hose. The PCM monitors the voltages of the IAC circuits. If it detects an incorrect voltage on one or more of the IAC motor circuits, it will set the P0505 code. It ... P0505/Code 14 is Idle Control SYSTEM malfunction, not IACv. Possible Causes: -IACvalve mechanical malfunction -Throttle body clogged port, improper ... 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. Looking at P0505, it does list Idle Control System Malfunction. Unfortunately, it is rather vague. There is no separate IAC valve anymore. 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. Scion xA/xB 1st-Gen Drivetrain & Power - P0505 woes - Hello all, I have a 2005 xB with 190k miles on it and its been running great besides ...