DTC P0505: Notes

DTC P0505 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0505	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 (CCM). The MIL does not illuminate. FREEZE FRAME DATA is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Air cleaner element clogged Air intake passage clogged A/C relay control circuit malfunction Generator control circuit malfunction Low engine compression (Over capacity of blow-by gas) PCM malfunction