Mastering P0505 A Comprehensive Guide to Throttle Position Sensor Troubleshooting

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. That is an open or short code for the IAC since you had your engine replaced simply check if it is plugged in. 2001 Toyota Corolla code P0505 showing idol control malfunction how do we fix this. Reply 1: Remove and clean the IAC idle air ... 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. 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 ... Detailed information on troubleshooting and repairing a P0505 DTC code which refers to a malfunction of the IAC (Idle Air Control) system. I keep getting the p0505 code. Everything seems fine, runs smoothly, idles fine. I have been searching for intake vac leaks, but no luck. Any ideas anyone? The P0505 code, along with the P0506 and P0507 codes, have to do with your vehicle's idle air control valve (IAC), a piece commonly found on or near the ... This code comes on for two conditions. When the idle speed isn't the specified amount or a learned value of the idle speed control remains the maximum or ... A P0505 trouble code will generally trigger the check engine light on. Depending on your vehicle's make, the check engine light may be referred to as the CEL.