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P0505 Diagnostic Trouble Code Discussion for September 2008

Idle Air Control Motor Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0505
Help Request Posted
2000 Infiniti I30 3.0L Poor Idle Quality, Surge, MIL Lamp on VIN: JNKCA3AXYT
P0505: Idle Air Control, Auxiliary Air Control Valve. Idle surges between 900-1700 rpm in park. When in gear idle holds at 1000-1100 rpm. Checked for vaccum leaks with smoke machine and noticed leak from plenuim gasket area but didn't seem to be great enough to cause problem. However the intake plenuim gasket was...
September 13, 2008
1996 Subaru Legacy L 2.2L Stall, MIL Lamp on VIN: 4S3BK4350T
P0505: Idle Speed Control System Malfunction. ... a mile or so and set P0500, speed sensor fault with the eventual stall. The P0505 IAC is from what all information shows a side effect of the P0500. What we have done is tested both speed sensors and received very nice AC...
September 30, 2008