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P0505 Diagnostic Trouble Code Discussion for February 2013

Idle Air Control Motor Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0505
Help Request Posted
2001 Subaru Outback 2.5L Surge, MIL Lamp on VIN: 4S3BH66501
P0505: . Sets code P0505 sometimes not right at first, sometimes immediately, idle surges or is up around 1100, sometimes real low. Sometimes seems OK. Have tried cleaning IAC. When idling high can block IAC port and engine will stall. Monitoring voltages at IAC there ...
February 13, 2013
2001 Honda Prelude 2.2L Hesitation, Surge VIN: JHMBB61401
P0505: Idle Speed Control System. ... code P0505(idle control system malfunction) keep coming back after I clear it. According to mitchell it support to be 650-750. I have found no vacuum leak when I smoke test the intake system. I can not get the RPM to drop within acceptable rage. There is a...
February 14, 2013