P0505 A Comprehensive Guide to Diagnosing and Fixing Throttle Position Sensor Faults

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. The error seems to happen before the Jeep ever starts, or the code does not get logged until the jeep is turned off. In this thread, the poster mentioned that he discovered the electrical connectors to the IACV and the power steering pressure sensor were ... The code P0505 stands for “Idle Control System Malfunction,” which means that the powertrain control module (PCM) can't control the idle speed. Claim your FREE engine code eraser https://free.nonda.co ============================= nonda Auto DIY Center is the biggest auto DIY ... 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. 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 ... P0505. IDLE CONTROL SYSTEM MALFUNCTION. CIRCUIT DESCRIPTION. The rotary solenoid type ISC valve is located under the throttle body and intake air bypassing the ... My erratic idle is still just that - erratic. Sometimes the engine speed drops out and dies coming up to a stoplight, and sometimes it doesn't. 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.