Mastering P0505 The Essential Guide to Throttle Position Sensor Troubleshooting and Repair

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 . 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. 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. 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 ... The code P0505 - Idle Control System Malfunction means that the engine computer cannot regulate the idle speed. In other words, the actual idle speed varies ... My check engine light is on and it's throwing the P0505 code out which is an "Idle Air Control Malfunction." I thought for sure by changing out the IAC sensor, ... 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. 2001 Toyota Corolla code P0505 showing idol control malfunction how do we fix this. Reply 1: Remove and clean the IAC idle air ... The check engine light is getting triggered when the PCM is in a closed loop operation. It also means that it is starting to monitor the OS2 sensor input. Code 0505: Check 1: With the engine idling at operating temperature, remove the electrical connector from the IAC valve. If the idle speed doesn ...