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P0505 Diagnostic Trouble Code Discussion for January 2011

Idle Air Control Motor Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0505
Help Request Posted
2001 Chrysler PT Cruiser Limited 2.4L MIL Lamp on VIN: 3C8FY4BB41
P0505: Idle Air Control Motor Circuit Malfunction. ... and a P0505 (Idle Air Control Motor Circuit Malfunction) set. This is a one-trip code and would reset within a few blocks after clearing. I checked all four IAC circuits with a labscope, wiggle tested the harness and connections, and verified PCM ability t...
January 11, 2011
1996 BMW Z3 Roadster 1.9L Poor Idle Quality, Misfire VIN: 4USCH7328T
P0505: Idle air control system. Intermittently problem with poor idle quality and misfire. I have driven this car for a 1/2 hr. stopped and drove for another 1/2 hr and everything worked perfect. The next time I started the car it had a poor idle and a bad misfire. This is when the codes s...
January 27, 2011