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Home >> Mitsubishi >> 1999 >> 3000GT Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0505: Idle Control System Malfunction >> Probable Cause

Probable Cause

Idle Air Control (IAC) motor failed.
Open or short in IAC motor circuit, or loose connector.
ECM failed.

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