Throttle Position Sensor Malfunction (P0505) A Comprehensive Troubleshooting Guide

The P0505 code is set when the IACV-AAC valve does not operate properly. What are Code Possible Symptoms? Engine Light ... I've replaced the IAC valve, thoroughly cleaned the throttle body and can't find any vacuum leaks. Idles very high and can't figure this out. The code sets when it can't get the idle speed within +200 / -100 of the target for more than x seconds, and it takes a failure in two successive drive cycles ... 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 . P0505. IDLE CONTROL SYSTEM MALFUNCTION. CIRCUIT DESCRIPTION. The rotary solenoid type ISC valve is located under the throttle body and intake air bypassing the ... 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? Possible Causes of P0505 · IAC mechanical malfunction · Throttle body clogged port · Intake manifold gasket leak · Intake snorkel or hose leak ... Your code could be generated by just a poor connection that is not allowing it to communicate with the ECM. The ECM computer is constantly ... 2001 Toyota Corolla code P0505 showing idol control malfunction how do we fix this. Reply 1: Remove and clean the IAC idle air ... The error code you received is for a faulty IAC valve but it probably is related to the idle speed that you fiddled with.... The ECM regulates ...