Unveiling P0505 The Comprehensive Guide to Idle Air Control System Diagnosis

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. This code which states IAC fault, there is no idle air control valve, no idle speed controller, or EGR system. Code P0505 points to a straightforward issue – an idle control system malfunction. This impacts engine RPMs at idle, causing a rough run. OBD Code P0505 - Idle Air Control System Malfunction ... P0505 is an OBD-II generic code in which the engine control module (ECM) finds out the engine idle ... P0505/Code 14 is Idle Control SYSTEM malfunction, not IACv. Possible Causes: -IACvalve mechanical malfunction -Throttle body clogged port, improper ... Customer: I have a code p0505 and I changed the idle control valve twice. Mechanic's Assistant: Have you seen this error before with the same vehicle? 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, ... That code can mean anything that interferes with a smooth idle, including bad gas, oil in the charge pipe, a dirty Maf sensor, even a broken ... Code 0505: Check 1: With the engine idling at operating temperature, remove the electrical connector from the IAC valve. If the idle speed doesn ...