DTC P0505:00: Notes

DTC P0505:00	IAC system problem
DETECTION CONDITION	The PCM cannot control idle speed toward target idle speed while KOER self test. Diagnostic support note This is a continuous monitor (other). The MIL does not illuminate. FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. The DTC is not stored in the PCM memory.
POSSIBLE CAUSE	Improper operation of drive-by-wire control system A/C relay control circuit malfunction Generator control circuit malfunction Air cleaner element restricted Air intake passage blockage Low engine compression (over capacity of blow-by gas) PCM malfunction