Throttle Position Sensor Code P0505 The In-Depth Analysis

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 ... A code indicating your idle air valve is bad or stuck. Many times a quick clean with carb cleaner fixes the problem. Sometimes a replacement is needed. Rodent nest in the air intake . You get the PO505 when a different idle pattern is detected it can be any place in the whole circuit . A P0505 is an Idle Air Control issue, it has nothing to do with the PCM. The IAC is what provides and controls all of the engine's air when the ... This code is triggered if the IAC pintle is 100% open and the idle RPM is more than 200 RPM lower than the ECM idle RPM setpoint value. It says most common reasons are Stuck IACV or a vacuum leak. When I suspected IACV problems, I just popped the valve off, 2 bolts, stuck a 9 volt battery to ... Toyota Corolla p0505 idle control system malfunction. 23K views · 2 years ago MILAN MALL ...more. Sai baba Auto electrical engineer. 3.67K. 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. P0505 = Adaptive Air Idle Trim (Upper/Lower) Volvo DTC Code EFI-233 Possible source(s) Upper limit:[*]Clogged air cleaner or air intake.[*]Contact resistance ... Detailed information on troubleshooting and repairing a P0505 DTC code which refers to a malfunction of the IAC (Idle Air Control) system. Also ...