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 (Mode2)/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 magnetic clutch malfunction Generator control circuit malfunction Air cleaner element clogged Throttle body passage clogged Insufficient engine compression (over capacity of blow-by gas) PCM malfunction